{"id":65602,"date":"2026-08-06T15:20:41","date_gmt":"2026-08-06T19:20:41","guid":{"rendered":"https:\/\/rheolution.com\/?p=65602"},"modified":"2026-08-14T10:00:37","modified_gmt":"2026-08-14T14:00:37","slug":"hydrogels-dalginate","status":"publish","type":"post","link":"https:\/\/rheolution.com\/fr\/notes-application\/hydrogels-dalginate\/","title":{"rendered":"Hydrogels d&rsquo;alginate"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"65602\" class=\"elementor elementor-65602 elementor-62717\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8fd4dcf e-flex e-con-boxed e-con e-parent\" data-id=\"8fd4dcf\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8c770e2 elementor-widget elementor-widget-heading\" data-id=\"8c770e2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h6 class=\"elementor-heading-title elementor-size-default\">Note d\u2019application | ElastoSens\u2122 Bio<\/h6>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-760ae40 elementor-widget elementor-widget-heading\" data-id=\"760ae40\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Hydrogels d'alginate : propri\u00e9t\u00e9s, applications et comportement m\u00e9canique\n<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-16057f6 elementor-widget elementor-widget-text-editor\" data-id=\"16057f6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>par <a href=\"https:\/\/www.linkedin.com\/in\/mayasalame\/\">Maya Salame<\/a> et <a href=\"https:\/\/www.linkedin.com\/in\/dimitria-camas%C3%A3o-049002a2\/\">Dimitria Camasao<\/a><\/p><p>Scientifiques d\u2019application<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-97ac8de e-flex e-con-boxed e-con e-parent\" data-id=\"97ac8de\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5fc8fde elementor-widget__width-initial elementor-widget-mobile__width-inherit elementor-widget elementor-widget-heading\" data-id=\"5fc8fde\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Qu'est-ce qu'un hydrogel d'alginate ?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d61237b elementor-widget elementor-widget-text-editor\" data-id=\"d61237b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400\">Les hydrogels d&rsquo;alginate sont des r\u00e9seaux polym\u00e8res tridimensionnels riches en eau, d\u00e9riv\u00e9s de l&rsquo;alginate, un polysaccharide anionique d&rsquo;origine naturelle. L&rsquo;alginate est principalement extrait des parois cellulaires des algues brunes appartenant \u00e0 la classe des ph\u00e9ophyc\u00e9es, bien qu&rsquo;il puisse \u00e9galement \u00eatre biosynth\u00e9tis\u00e9 par certaines esp\u00e8ces bact\u00e9riennes telles que   <\/span><i><span style=\"font-weight: 400\">Azotobacter<\/span><\/i><span style=\"font-weight: 400\"> et <\/span><i><span style=\"font-weight: 400\">Pseudomonas<\/span><\/i><span style=\"font-weight: 400\">. Sur le plan structurel, l&rsquo;alginate est un copolym\u00e8re lin\u00e9aire compos\u00e9 d&rsquo;acide \u03b2-D-mannuronique (unit\u00e9s M) et d&rsquo;acide \u03b1-L-guluronique (unit\u00e9s G), reli\u00e9s par des liaisons glycosidiques 1\u21924. Ces monom\u00e8res sont organis\u00e9s en blocs homopolym\u00e8res M, en blocs G et en blocs MG altern\u00e9s, la r\u00e9partition relative de ces blocs d\u00e9pendant de la source biologique et du proc\u00e9d\u00e9 d\u2019extraction. <\/span><\/p><p><span style=\"font-weight: 400\">La production industrielle d\u2019alginate implique g\u00e9n\u00e9ralement une extraction alcaline \u00e0 partir de biomasse d\u2019algues s\u00e9ch\u00e9es, suivie d\u2019une purification et d\u2019une conversion en alginate de sodium hydrosoluble. Lorsqu\u2019elles sont dissoutes dans un milieu aqueux et expos\u00e9es \u00e0 des cations multivalents, les cha\u00eenes d\u2019alginate s\u2019assemblent rapidement pour former des hydrogels physiquement r\u00e9ticul\u00e9s. Ce processus de g\u00e9lification doux et aqueux pr\u00e9serve la compatibilit\u00e9 biologique et rend les hydrogels d\u2019alginate particuli\u00e8rement int\u00e9ressants pour les applications biom\u00e9dicales et biotechnologiques.  <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5703c6a elementor-widget__width-initial elementor-widget-mobile__width-inherit elementor-widget elementor-widget-heading\" data-id=\"5703c6a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Propri\u00e9t\u00e9s principales des hydrogels d'alginate<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5a0b64a elementor-widget elementor-widget-heading\" data-id=\"5a0b64a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Caract\u00e9ristiques physico-chimiques<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-38524ee elementor-widget elementor-widget-text-editor\" data-id=\"38524ee\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400\">La formation de l&rsquo;hydrogel d&rsquo;alginate est r\u00e9gie par les interactions ioniques entre les groupes carboxylates charg\u00e9s n\u00e9gativement pr\u00e9sents sur le squelette du polym\u00e8re et les cations multivalents. La g\u00e9lification se produit par la liaison coop\u00e9rative de ces ions \u00e0 des r\u00e9gions riches en acide guluronique, ce qui donne lieu \u00e0 une architecture de la zone de jonction souvent d\u00e9crite comme une structure de type \u00ab bo\u00eete \u00e0 \u0153ufs \u00bb. <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e821974 elementor-widget elementor-widget-text-editor\" data-id=\"e821974\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400\">Parmi les principaux facteurs influen\u00e7ant la formation de l&rsquo;hydrogel, on peut citer :<\/span><\/p><ul><li style=\"font-weight: 400\"><strong>M\u00e9canismes de r\u00e9ticulation<\/strong><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">R\u00e9ticulation ionique \u00e0 l&rsquo;aide de cations bivalents ou trivalents (par exemple, Ca\u00b2\u207a, Ba\u00b2\u207a, Sr\u00b2\u207a).<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">R\u00e9ticulation covalente par oxydation partielle suivie de r\u00e9actions de type Schiff avec des polym\u00e8res contenant des groupes amine.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">R\u00e9seaux interp\u00e9n\u00e9trants ou hybrides form\u00e9s \u00e0 partir de polym\u00e8res synth\u00e9tiques ou naturels.<\/span><\/li><\/ul><\/li><li style=\"font-weight: 400\"><strong>Facteurs environnementaux<\/strong><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Type et concentration des cations.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Masse mol\u00e9culaire de l&rsquo;alginate et rapport de blocs G\/M.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">le pH et la force ionique du milieu environnant.<\/span><\/li><\/ul><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8842651 elementor-widget elementor-widget-text-editor\" data-id=\"8842651\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400\">Ces param\u00e8tres d\u00e9terminent, dans leur ensemble, la cin\u00e9tique de g\u00e9lification, la densit\u00e9 du r\u00e9seau, la porosit\u00e9 et la capacit\u00e9 de r\u00e9tention d&rsquo;eau.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-30981bc elementor-widget elementor-widget-heading\" data-id=\"30981bc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Propri\u00e9t\u00e9s m\u00e9caniques<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2e827a1 elementor-widget elementor-widget-text-editor\" data-id=\"2e827a1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400\">Les hydrogels d&rsquo;alginate pr\u00e9sentent un comportement m\u00e9canique souple et visco\u00e9lastique qui s&rsquo;apparente \u00e9troitement \u00e0 celui des tissus biologiques hydrat\u00e9s. Leur rigidit\u00e9 et leur \u00e9lasticit\u00e9 sont hautement modulables et d\u00e9pendent de la concentration en polym\u00e8re, de l&rsquo;architecture mol\u00e9culaire et de la densit\u00e9 de r\u00e9ticulation. <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4476bec elementor-widget elementor-widget-text-editor\" data-id=\"4476bec\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400\">Parmi les caract\u00e9ristiques pertinentes sur le plan m\u00e9canique, on peut citer :<\/span><\/p><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Modulation du module d&rsquo;\u00e9lasticit\u00e9 par la s\u00e9lection des cations et la teneur en blocs G.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Comportement de relaxation des contraintes r\u00e9sultant de liaisons transversales ioniques r\u00e9versibles.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">L&rsquo;\u00e9volution m\u00e9canique en fonction du temps, telle que l&rsquo;\u00e9change d&rsquo;ions ou l&rsquo;oxydation partielle du polym\u00e8re, peut affaiblir progressivement le r\u00e9seau.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Am\u00e9lioration de la r\u00e9sistance m\u00e9canique dans les syst\u00e8mes composites ou hybrides \u00e0 base d&rsquo;alginate int\u00e9grant des polym\u00e8res secondaires, des nanoparticules ou des liaisons covalentes.<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fba9753 elementor-widget elementor-widget-text-editor\" data-id=\"fba9753\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400\">Cette adaptabilit\u00e9 permet aux hydrogels d&rsquo;alginate de couvrir un large \u00e9ventail de propri\u00e9t\u00e9s m\u00e9caniques, allant des matrices hautement souples destin\u00e9es \u00e0 l&rsquo;encapsulation cellulaire aux \u00e9chafaudages renforc\u00e9s destin\u00e9s \u00e0 la cr\u00e9ation de mod\u00e8les tissulaires capables de supporter des charges.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0959975 elementor-widget elementor-widget-heading\" data-id=\"0959975\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Interactions biologiques<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-90cc644 elementor-widget elementor-widget-text-editor\" data-id=\"90cc644\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400\">Les hydrogels d&rsquo;alginate sont largement reconnus pour leur biocompatibilit\u00e9 et leur faible cytotoxicit\u00e9, en particulier lorsqu&rsquo;ils sont hautement purifi\u00e9s. Leurs performances biologiques sont toutefois fortement influenc\u00e9es par leur composition chimique et leur historique de traitement. <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-62fefea elementor-widget elementor-widget-text-editor\" data-id=\"62fefea\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400\">Parmi les principales interactions biologiques, on peut citer :<\/span><\/p><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Adh\u00e9rence cellulaire inh\u00e9rente minimale, due \u00e0 l&rsquo;absence de motifs natifs de liaison cellulaire.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Une immunog\u00e9nicit\u00e9 modulable, influenc\u00e9e par le rapport G\/M et les impuret\u00e9s r\u00e9siduelles.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Stabilit\u00e9 enzymatique chez les mammif\u00e8res, car les enzymes d\u00e9gradant l&rsquo;alginate y sont g\u00e9n\u00e9ralement absentes.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Capacit\u00e9 de fonctionnalisation, permettant l&rsquo;incorporation de peptides bioactifs, de prot\u00e9ines ou de polysaccharides afin de favoriser l&rsquo;adh\u00e9sion, la migration et la diff\u00e9renciation cellulaires.<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-84ba0f0 elementor-widget elementor-widget-text-editor\" data-id=\"84ba0f0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400\">Gr\u00e2ce \u00e0 des modifications chimiques, les hydrogels d&rsquo;alginate peuvent \u00eatre con\u00e7us de mani\u00e8re \u00e0 mieux reproduire les environnements de la matrice extracellulaire tout en conservant des profils de d\u00e9gradation contr\u00f4l\u00e9s.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-28004d8 elementor-widget__width-initial elementor-widget-mobile__width-inherit elementor-widget elementor-widget-heading\" data-id=\"28004d8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Applications des hydrogels d'alginate<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-06adff0 elementor-widget elementor-widget-heading\" data-id=\"06adff0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Ing\u00e9nierie tissulaire<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ba2f1b1 elementor-widget elementor-widget-text-editor\" data-id=\"ba2f1b1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400\">Les hydrogels d\u2019alginate sont largement utilis\u00e9s comme mat\u00e9riaux de support en ing\u00e9nierie tissulaire en raison de leur forte teneur en eau, de leurs conditions de g\u00e9lification peu exigeantes et de leur similitude structurelle avec les matrices extracellulaires natives. Ils permettent l\u2019encapsulation cellulaire en trois dimensions et sont largement utilis\u00e9s dans la r\u00e9g\u00e9n\u00e9ration du cartilage, des os, de la peau et des tissus mous. Les syst\u00e8mes composites \u00e0 base d\u2019alginate sont souvent con\u00e7us pour pallier les limites en mati\u00e8re de r\u00e9sistance m\u00e9canique ou d\u2019adh\u00e9rence cellulaire.  <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d01f123 elementor-widget elementor-widget-heading\" data-id=\"d01f123\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Culture cellulaire 3D et mod\u00e8les de maladies<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-137d5ec elementor-widget elementor-widget-text-editor\" data-id=\"137d5ec\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400\">In vitro, les hydrogels d&rsquo;alginate offrent des environnements reproductibles et physiologiquement pertinents pour la culture cellulaire tridimensionnelle. Leur perm\u00e9abilit\u00e9 permet un transport efficace des nutriments et des d\u00e9chets, tandis que leur rigidit\u00e9 ajustable permet de mod\u00e9liser des niches m\u00e9caniques sp\u00e9cifiques \u00e0 certains tissus. Ces caract\u00e9ristiques conf\u00e8rent aux hydrogels d&rsquo;alginate une grande valeur pour l&rsquo;\u00e9tude du comportement cellulaire, de la m\u00e9canobiologie et de la progression des maladies.  <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c1cb3eb elementor-widget elementor-widget-heading\" data-id=\"c1cb3eb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">D\u00e9livrance de m\u00e9dicaments, de g\u00e8nes et de cellules<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ff74672 elementor-widget elementor-widget-text-editor\" data-id=\"ff74672\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400\">Les hydrogels d&rsquo;alginate constituent des supports d&rsquo;administration polyvalents pour les petites mol\u00e9cules, les prot\u00e9ines, les acides nucl\u00e9iques et les cellules vivantes. L&rsquo;encapsulation au sein du r\u00e9seau de l&rsquo;hydrogel permet une lib\u00e9ration localis\u00e9e et prolong\u00e9e, induite par diffusion, par relaxation du r\u00e9seau ou par d\u00e9gradation contr\u00f4l\u00e9e. Les syst\u00e8mes \u00e0 base d&rsquo;alginate injectables pr\u00e9sentent des avantages particuliers pour l&rsquo;administration th\u00e9rapeutique mini-invasive.  <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-892f73a elementor-widget__width-initial elementor-widget-mobile__width-inherit elementor-widget elementor-widget-heading\" data-id=\"892f73a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Pourquoi la visco\u00e9lasticit\u00e9 des hydrogels d'alginate est-elle importante ?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-05c6bea elementor-widget elementor-widget-text-editor\" data-id=\"05c6bea\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400\">La nature visco\u00e9lastique des hydrogels d\u2019alginate est au c\u0153ur de leurs performances biologiques et fonctionnelles. La visco\u00e9lasticit\u00e9 d\u00e9termine la mani\u00e8re dont ces mat\u00e9riaux dissipent l\u2019\u00e9nergie, s\u2019adaptent \u00e0 la d\u00e9formation et rel\u00e2chent les contraintes au fil du temps \u2014 des propri\u00e9t\u00e9s qui influencent fortement la m\u00e9canotransduction cellulaire, l\u2019int\u00e9gration tissulaire et la stabilit\u00e9 structurelle. En m\u00e9decine r\u00e9g\u00e9n\u00e9rative et en culture cellulaire, il a \u00e9t\u00e9 d\u00e9montr\u00e9 que la relaxation des contraintes et la rigidit\u00e9 en fonction du temps affectent l\u2019\u00e9talement cellulaire, la diff\u00e9renciation et le remodelage de la matrice, ce qui fait de l\u2019ajustement visco\u00e9lastique un param\u00e8tre de conception essentiel.  <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-851f298 elementor-widget__width-initial elementor-widget-mobile__width-inherit elementor-widget elementor-widget-heading\" data-id=\"851f298\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">M\u00e9thodes de caract\u00e9risation de la visco\u00e9lasticit\u00e9 des hydrogels d'alginate<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-171be53 elementor-widget elementor-widget-text-editor\" data-id=\"171be53\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400\">Les propri\u00e9t\u00e9s m\u00e9caniques des hydrogels d&rsquo;alginate sont g\u00e9n\u00e9ralement \u00e9valu\u00e9es \u00e0 l&rsquo;aide de techniques d&rsquo;essais m\u00e9caniques sur l&rsquo;ensemble du mat\u00e9riau, telles que la rh\u00e9om\u00e9trie oscillatoire, la compression non confin\u00e9e et les essais de traction. Ces m\u00e9thodes fournissent des informations pr\u00e9cieuses sur les modules d&rsquo;\u00e9lasticit\u00e9 et de viscosit\u00e9, mais n\u00e9cessitent souvent un contact avec l&rsquo;\u00e9chantillon, sa destruction ou une pr\u00e9paration complexe. Les essais traditionnels peuvent \u00e9galement s\u2019av\u00e9rer peu adapt\u00e9s pour saisir les variations dans le temps des mat\u00e9riaux mous et hydrat\u00e9s, ou pour suivre l\u2019\u00e9volution m\u00e9canique dans des conditions st\u00e9riles et physiologiques.  <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1961b9f elementor-widget__width-initial elementor-widget-mobile__width-inherit elementor-widget elementor-widget-heading\" data-id=\"1961b9f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u00c9tude de cas : Caract\u00e9risation m\u00e9canique d'un hydrogel d'alginate \u00e0 l'aide d'ElastoSens\u2122 Bio<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4babf25 elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"4babf25\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">ElastoSens\u2122 Bio : un outil non destructif permettant de mesurer les hydrogels d'alginate souples<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5a225c3 e-grid e-con-full e-con e-child\" data-id=\"5a225c3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ce43e5b elementor-widget elementor-widget-text-editor\" data-id=\"ce43e5b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/rheolution.com\/instrument-elastosensbio\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400\"><strong>ElastoSens\u2122 Bio<\/strong><\/span><\/a> <span style=\"font-weight: 400\">il s&rsquo;agit d&rsquo;un instrument sans contact, fonctionnant par r\u00e9sonance, sp\u00e9cialement con\u00e7u pour caract\u00e9riser les propri\u00e9t\u00e9s visco\u00e9lastiques de biomat\u00e9riaux souples tels que les hydrogels d&rsquo;alginate. En g\u00e9n\u00e9rant de l\u00e9g\u00e8res vibrations m\u00e9caniques et en suivant les variations de la fr\u00e9quence de r\u00e9sonance, il permet de mesurer en temps r\u00e9el la rigidit\u00e9 et l&rsquo;\u00e9volution visco\u00e9lastique sans d\u00e9former ni endommager physiquement l&rsquo;\u00e9chantillon. Cette approche est particuli\u00e8rement bien adapt\u00e9e aux r\u00e9seaux d\u2019alginate fragiles et fortement hydrat\u00e9s, offrant des avantages cl\u00e9s, notamment des essais non destructifs, une grande sensibilit\u00e9 aux mat\u00e9riaux souples, des mesures reproductibles dans le temps et une compatibilit\u00e9 avec les protocoles st\u00e9riles.  <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-045aef9 elementor-widget elementor-widget-image\" data-id=\"045aef9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"968\" height=\"544\" src=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/elastosens2-1.webp?fit=968%2C544&amp;ssl=1\" class=\"attachment-large size-large wp-image-50364\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/elastosens2-1.webp?w=968&amp;ssl=1 968w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/elastosens2-1.webp?resize=300%2C169&amp;ssl=1 300w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/elastosens2-1.webp?resize=768%2C432&amp;ssl=1 768w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/elastosens2-1.webp?resize=133%2C75&amp;ssl=1 133w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/elastosens2-1.webp?resize=480%2C270&amp;ssl=1 480w\" sizes=\"(max-width:767px) 700px, (max-width:968px) 100vw, 968px\" data-attachment-id=\"50364\" data-permalink=\"https:\/\/rheolution.com\/fr\/elastosens2-4-2-2-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/elastosens2-1.webp?fit=968%2C544&amp;ssl=1\" data-orig-size=\"968,544\" data-comments-opened=\"1\" data-image-title=\"elastosens2\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/elastosens2-1.webp?fit=968%2C544&amp;ssl=1\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b87c673 elementor-widget elementor-widget-text-editor\" data-id=\"b87c673\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400\">Afin de d\u00e9montrer les capacit\u00e9s de l\u2019ElastoSens\u2122 Bio, nous avons r\u00e9alis\u00e9 une s\u00e9rie de tests sur des hydrogels \u00e0 base d\u2019alginate. La section suivante pr\u00e9sente les mat\u00e9riaux et les m\u00e9thodes utilis\u00e9s pour caract\u00e9riser la g\u00e9lification de l\u2019alginate et son \u00e9volution m\u00e9canique ; elle est suivie des r\u00e9sultats, qui constituent un exemple concret de la capacit\u00e9 de l\u2019instrument \u00e0 surveiller de mani\u00e8re non destructive les propri\u00e9t\u00e9s visco\u00e9lastiques au fil du temps. <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ed23fc9 elementor-widget elementor-widget-heading\" data-id=\"ed23fc9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Mat\u00e9riel et m\u00e9thodes<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d118051 elementor-widget elementor-widget-text-editor\" data-id=\"d118051\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400\">Les solutions d\u2019alginate (1 % p\/v) et de chlorure de calcium (CaCl\u2082, 10 mM et 50 mM) ont \u00e9t\u00e9 fournies par CELLINK (Boston, \u00c9tats-Unis). De l\u2019alginate (3 ml) a \u00e9t\u00e9 introduit dans le porte-\u00e9chantillon macro ElastoSens\u2122 Bio, puis une solution de CaCl\u2082 (3 ml) a \u00e9t\u00e9 d\u00e9licatement vers\u00e9e par-dessus afin de d\u00e9clencher la r\u00e9ticulation ionique. La solution de CaCl\u2082 a ensuite \u00e9t\u00e9 retir\u00e9e, puis les propri\u00e9t\u00e9s visco\u00e9lastiques ont \u00e9t\u00e9 mesur\u00e9es \u00e0 l\u2019aide de l\u2019ElastoSens\u2122 Bio \u00e0 25 \u00b0C pendant 5 minutes (intervalle d\u2019\u00e9chantillonnage : 10 s) apr\u00e8s 100 minutes. Les donn\u00e9es sont pr\u00e9sent\u00e9es sous forme de moyenne \u00b1 \u00e9cart-type. Les analyses statistiques ont \u00e9t\u00e9 r\u00e9alis\u00e9es \u00e0 l\u2019aide du logiciel GraphPad Prism v9, par un test t non appari\u00e9 (GraphPad Software, La Jolla, CA, \u00c9tats-Unis).      <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0f0a34f elementor-widget elementor-widget-image\" data-id=\"0f0a34f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"512\" height=\"356\" src=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Alginate-Hydrogel.jpg?fit=512%2C356&amp;ssl=1\" class=\"attachment-large size-large wp-image-62723\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Alginate-Hydrogel.jpg?w=512&amp;ssl=1 512w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Alginate-Hydrogel.jpg?resize=300%2C209&amp;ssl=1 300w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Alginate-Hydrogel.jpg?resize=108%2C75&amp;ssl=1 108w\" sizes=\"(max-width:767px) 512px, 512px\" data-attachment-id=\"62723\" data-permalink=\"https:\/\/rheolution.com\/fr\/alginate-hydrogel-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Alginate-Hydrogel.jpg?fit=512%2C356&amp;ssl=1\" data-orig-size=\"512,356\" data-comments-opened=\"1\" data-image-title=\"Alginate Hydrogel\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Alginate-Hydrogel.jpg?fit=512%2C356&amp;ssl=1\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-13da851 elementor-widget elementor-widget-text-editor\" data-id=\"13da851\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><em><b>Figure 1.<\/b><span style=\"font-weight: 400\">  Image illustrative du gel d&rsquo;alginate dans le support apr\u00e8s l&rsquo;essai.<\/span><\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-aa24bd0 elementor-widget elementor-widget-heading\" data-id=\"aa24bd0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">R\u00e9sultats et discussion<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-54513af elementor-widget elementor-widget-text-editor\" data-id=\"54513af\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400\">Apr\u00e8s 100 minutes de r\u00e9ticulation, les hydrogels d\u2019alginate \u00e0 1 % (p\/v) form\u00e9s avec du CaCl\u2082 \u00e0 50 mM pr\u00e9sentaient un module de stockage en cisaillement (G\u2032) significativement plus \u00e9lev\u00e9 que ceux r\u00e9ticul\u00e9s avec du CaCl\u2082 \u00e0 10 mM (2 832 \u00b1 53 Pa contre 608 \u00b1 25 Pa, ****p &lt; 0,0001). Le facteur d\u2019amortissement (tan \u03b4) \u00e9tait \u00e9galement significativement plus \u00e9lev\u00e9 pour la concentration de 50 mM que pour celle de 10 mM (0,195 \u00b1 0,085 contre 0,161 \u00b1 0,013, ****p &lt; 0,0001), ce qui indique une modification de l\u2019\u00e9quilibre visco\u00e9lastique entre les contributions \u00e9lastiques et visqueuses. L\u2019augmentation marqu\u00e9e de G\u2032 avec l\u2019augmentation de la concentration en CaCl\u2082 refl\u00e8te une densit\u00e9 de r\u00e9ticulation plus \u00e9lev\u00e9e, ce qui correspond \u00e0 un plus grand nombre de ponts ioniques entre les cha\u00eenes d\u2019alginate. Bien que les deux conditions aient donn\u00e9 lieu \u00e0 la formation de r\u00e9seaux principalement \u00e9lastiques (tan \u03b4 &lt; 0,5), la valeur plus \u00e9lev\u00e9e de tan \u03b4 observ\u00e9e \u00e0 50 mM de CaCl\u2082 sugg\u00e8re une augmentation mod\u00e9r\u00e9e de la dissipation visqueuse. Dans l\u2019ensemble, ces r\u00e9sultats d\u00e9montrent que la concentration en CaCl\u2082 permet de moduler efficacement \u00e0 la fois la rigidit\u00e9 et la r\u00e9ponse visco\u00e9lastique des hydrogels d\u2019alginate.    <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-04b5520 e-grid e-con-full e-con e-child\" data-id=\"04b5520\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a2fe99a elementor-widget elementor-widget-image\" data-id=\"a2fe99a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"817\" height=\"834\" src=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Alginate-Hydrogel_-G-10-vs-50.png?fit=817%2C834&amp;ssl=1\" class=\"attachment-large size-large wp-image-62731\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Alginate-Hydrogel_-G-10-vs-50.png?w=817&amp;ssl=1 817w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Alginate-Hydrogel_-G-10-vs-50.png?resize=294%2C300&amp;ssl=1 294w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Alginate-Hydrogel_-G-10-vs-50.png?resize=768%2C784&amp;ssl=1 768w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Alginate-Hydrogel_-G-10-vs-50.png?resize=73%2C75&amp;ssl=1 73w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Alginate-Hydrogel_-G-10-vs-50.png?resize=700%2C715&amp;ssl=1 700w\" sizes=\"(max-width:767px) 700px, (max-width:817px) 100vw, 817px\" data-attachment-id=\"62731\" data-permalink=\"https:\/\/rheolution.com\/fr\/alginate-hydrogel_-g-10-vs-50-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Alginate-Hydrogel_-G-10-vs-50.png?fit=817%2C834&amp;ssl=1\" data-orig-size=\"817,834\" data-comments-opened=\"1\" data-image-title=\"Alginate Hydrogel_ G&amp;rsquo; 10 vs 50\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Alginate-Hydrogel_-G-10-vs-50.png?fit=817%2C834&amp;ssl=1\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a351799 elementor-widget elementor-widget-image\" data-id=\"a351799\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"771\" height=\"834\" src=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Alginate-Hydrogel_-tanD-10-vs-50.png?fit=771%2C834&amp;ssl=1\" class=\"attachment-large size-large wp-image-62739\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Alginate-Hydrogel_-tanD-10-vs-50.png?w=771&amp;ssl=1 771w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Alginate-Hydrogel_-tanD-10-vs-50.png?resize=277%2C300&amp;ssl=1 277w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Alginate-Hydrogel_-tanD-10-vs-50.png?resize=768%2C831&amp;ssl=1 768w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Alginate-Hydrogel_-tanD-10-vs-50.png?resize=69%2C75&amp;ssl=1 69w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Alginate-Hydrogel_-tanD-10-vs-50.png?resize=700%2C757&amp;ssl=1 700w\" sizes=\"(max-width:767px) 700px, (max-width:771px) 100vw, 771px\" data-attachment-id=\"62739\" data-permalink=\"https:\/\/rheolution.com\/fr\/alginate-hydrogel_-tand-10-vs-50-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Alginate-Hydrogel_-tanD-10-vs-50.png?fit=771%2C834&amp;ssl=1\" data-orig-size=\"771,834\" data-comments-opened=\"1\" data-image-title=\"Alginate Hydrogel_ tanD 10 vs 50\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Alginate-Hydrogel_-tanD-10-vs-50.png?fit=771%2C834&amp;ssl=1\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-39e927a elementor-widget elementor-widget-text-editor\" data-id=\"39e927a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><em><b>Figure 2.<\/b><span style=\"font-weight: 400\">  Module de stockage en cisaillement (G\u2032, \u00e0 gauche) et facteur d&rsquo;amortissement (tan\u03b4, \u00e0 droite) d&rsquo;une solution d&rsquo;alginate \u00e0 1 % (p\/v) r\u00e9ticul\u00e9e avec 50 mM et 10 mM de CaCl\u2082 apr\u00e8s 100 minutes (moyenne \u00b1 \u00e9cart-type). Diff\u00e9rence statistique indiqu\u00e9e par ****p &lt; 0,0001. <\/span><\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8ad5968 elementor-widget elementor-widget-heading\" data-id=\"8ad5968\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Conclusions et perspectives<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b7d7a98 elementor-widget elementor-widget-text-editor\" data-id=\"b7d7a98\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400\">Le comportement m\u00e9canique des hydrogels d\u2019alginate \u2014 r\u00e9gi par la r\u00e9ticulation ionique, l\u2019architecture du r\u00e9seau et l\u2019\u00e9change ionique d\u00e9pendant du temps \u2014 est essentiel \u00e0 leurs performances dans les syst\u00e8mes biom\u00e9dicaux et d\u2019ing\u00e9nierie. Les gels d\u2019alginate \u00e9tant souples, fortement hydrat\u00e9s et en constante \u00e9volution, leurs propri\u00e9t\u00e9s visco\u00e9lastiques doivent \u00eatre caract\u00e9ris\u00e9es sans alt\u00e9rer leur structure ni leur st\u00e9rilit\u00e9. La surveillance visco\u00e9lastique non destructive r\u00e9alis\u00e9e \u00e0 l\u2019aide de l\u2019ElastoSens\u2122 Bio permet une \u00e9valuation fiable et longitudinale des hydrogels d\u2019alginate, depuis leur g\u00e9lification jusqu\u2019\u00e0 leur utilisation.  <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-aed2e2d elementor-widget elementor-widget-text-editor\" data-id=\"aed2e2d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400\">Principaux avantages des hydrogels d&rsquo;alginate :<\/span><\/p><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Technologie non destructive optimis\u00e9e pour les mat\u00e9riaux tendres et tr\u00e8s hydrat\u00e9s.<\/span><span style=\"font-weight: 400\"><br><\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Haute sensibilit\u00e9 et r\u00e9p\u00e9tabilit\u00e9 pour les r\u00e9seaux \u00e0 faible rigidit\u00e9.<\/span><span style=\"font-weight: 400\"><br><\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Suivi en temps r\u00e9el de la cin\u00e9tique de g\u00e9lification et de la transition liquide-gel.<\/span><span style=\"font-weight: 400\"><br><\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Mesure de la rigidit\u00e9 terminale et de la stabilisation m\u00e9canique.<\/span><span style=\"font-weight: 400\"><br><\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Essais longitudinaux sur le m\u00eame \u00e9chantillon, y compris dans des conditions st\u00e9riles.<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-794c36a elementor-widget elementor-widget-heading\" data-id=\"794c36a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">R\u00e9f\u00e9rences<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-27340c7 elementor-widget elementor-widget-text-editor\" data-id=\"27340c7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/link.springer.com\/article\/10.1007\/s42452-020-04096-w\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400\">Sahoo, D. R., &amp; Biswal, T. (2021). Alginate and its application to tissue engineering.  <\/span>SN Applied Sciences, 3(1), 30.<\/a><\/p><p><a href=\"https:\/\/www.mdpi.com\/1996-1944\/6\/4\/1285\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400\">Sun, J., &amp; Tan, H. (2013). Alginate-based biomaterials for regenerative medicine applications.  <\/span>Materials, 6(4), 1285-1309.<\/a><\/p><p><a href=\"https:\/\/www.mdpi.com\/1660-3397\/21\/3\/189\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400\">Farshidfar, N., Iravani, S., &amp; Varma, R. S. (2023). Alginate-based biomaterials in tissue engineering and regenerative medicine.  <\/span>Marine Drugs, 21(3), 189.<br \/><\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9383078 elementor-widget__width-initial elementor-widget-mobile__width-inherit elementor--h-position-center elementor--v-position-middle elementor-arrows-position-inside elementor-widget elementor-widget-slides\" data-id=\"9383078\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;navigation&quot;:&quot;arrows&quot;,&quot;autoplay_speed&quot;:4000,&quot;transition_speed&quot;:4000,&quot;autoplay&quot;:&quot;yes&quot;,&quot;pause_on_hover&quot;:&quot;yes&quot;,&quot;pause_on_interaction&quot;:&quot;yes&quot;,&quot;infinite&quot;:&quot;yes&quot;,&quot;transition&quot;:&quot;slide&quot;}\" data-widget_type=\"slides.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div 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class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>D\u00e9couvrez comment notre technologie mesure de mani\u00e8re non destructive les propri\u00e9t\u00e9s visco\u00e9lastiques des biomat\u00e9riaux mous et des tissus en utilisant des micro-volumes d\u2019\u00e9chantillons<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c4ce1d0 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"c4ce1d0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/rheolution.com\/contact\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Contactez-nous pour plus d'informations<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-efbb293 elementor-widget elementor-widget-heading\" data-id=\"efbb293\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Articles connexes<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3f623a9 premium-blog-cta-full-yes premium-floating-effects-yes premium-disable-fe-yes elementor-widget__width-initial premium-blog-align-left elementor-widget elementor-widget-premium-addon-blog\" data-id=\"3f623a9\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;force_height&quot;:&quot;true&quot;,&quot;premium_blog_grid&quot;:&quot;yes&quot;,&quot;premium_blog_layout&quot;:&quot;even&quot;,&quot;premium_blog_columns_number&quot;:&quot;50%&quot;,&quot;premium_blog_columns_number_tablet&quot;:&quot;50%&quot;,&quot;premium_blog_columns_number_mobile&quot;:&quot;100%&quot;,&quot;scroll_to_offset&quot;:&quot;yes&quot;,&quot;premium_fe_trigger&quot;:&quot;load&quot;,&quot;premium_fe_direction&quot;:&quot;alternate&quot;,&quot;premium_fe_loop&quot;:&quot;default&quot;,&quot;premium_fe_easing&quot;:&quot;easeInOutSine&quot;}\" data-widget_type=\"premium-addon-blog.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n\t\t\n\n\t\t\t\t<div class=\"premium-blog-wrap  premium-blog-even\" data-page=\"65602\" data-pagination=\"true\">\n\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-post-outer-container\" data-total=\"3\">\n\t\t\t<div class=\"premium-blog-post-container premium-blog-skin-classic\">\n\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumb-effect-wrapper\">\n\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-container premium-blog-zoomin-effect\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"7000\" height=\"2322\" src=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/FIBRIN.jpg?fit=7000%2C2322&amp;ssl=1\" class=\"attachment-full size-full wp-image-63000\" alt=\"\" data-attachment-id=\"63000\" data-permalink=\"https:\/\/rheolution.com\/fr\/fibrin-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/FIBRIN.jpg?fit=7000%2C2322&amp;ssl=1\" data-orig-size=\"7000,2322\" data-comments-opened=\"1\" data-image-title=\"FIBRIN\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/FIBRIN.jpg?fit=1024%2C340&amp;ssl=1\" srcset=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/FIBRIN.jpg?w=7000&amp;ssl=1 7000w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/FIBRIN.jpg?resize=300%2C100&amp;ssl=1 300w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/FIBRIN.jpg?resize=1024%2C340&amp;ssl=1 1024w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/FIBRIN.jpg?resize=768%2C255&amp;ssl=1 768w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/FIBRIN.jpg?resize=1536%2C510&amp;ssl=1 1536w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/FIBRIN.jpg?resize=2048%2C679&amp;ssl=1 2048w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/FIBRIN.jpg?resize=150%2C50&amp;ssl=1 150w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/FIBRIN.jpg?resize=700%2C232&amp;ssl=1 700w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/FIBRIN.jpg?w=2440&amp;ssl=1 2440w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/FIBRIN.jpg?w=3660&amp;ssl=1 3660w\" sizes=\"(max-width:767px) 700px, (max-width:7000px) 100vw, 7000px\" \/>\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-overlay\">\n\t\t\t\t\t\t\t\t<a class=\"elementor-icon\" href=\"https:\/\/rheolution.com\/fr\/notes-application\/hydrogels-de-fibrine\/\" target=\"_blank\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-screen-only\">Hydrogels de fibrine<\/span>\n\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-content-wrapper \">\n\n\t\t\t\t\t<div class=\"premium-blog-inner-container\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<h4 class=\"premium-blog-entry-title\">\n\t\t\t<a href=\"https:\/\/rheolution.com\/fr\/notes-application\/hydrogels-de-fibrine\/\" target=\"_blank\">\n\t\t\t\tHydrogels de fibrine\t\t\t<\/a>\n\t\t<\/h4>\n\t\t\t\t<div class=\"premium-blog-entry-meta\">\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t<div class=\"premium-blog-content-inner-wrapper\">\n\t\t<p class=\"premium-blog-post-content\">Les hydrogels de fibrine sont des biomat\u00e9riaux naturels \u00e0 base de prot\u00e9ines, form\u00e9s \u00e0 partir de la fibrine, ce polym\u00e8re insoluble g\u00e9n\u00e9r\u00e9 lors de la coagulation sanguine. La fibrine provient du fibrinog\u00e8ne, une glycoprot\u00e9ine plasmatique compos\u00e9e de trois paires de cha\u00eenes polypeptidiques qui s\u2019assemblent en un r\u00e9seau fibreux sous l\u2019effet d\u2019une activation enzymatique. Dans des conditions physiologiques, la formation de la fibrine est d\u00e9clench\u00e9e par le clivage du fibrinog\u00e8ne sous l\u2019action de la thrombine, ce qui expose des sites de polym\u00e9risation qui favorisent l\u2019auto-assemblage spontan\u00e9 en une matrice hydrat\u00e9e et poreuse.<\/p><div class=\"premium-blog-excerpt-link-wrap\"><a href=\"https:\/\/rheolution.com\/fr\/notes-application\/hydrogels-de-fibrine\/\" target=\"_blank\" class=\"premium-blog-excerpt-link elementor-button\">Lire la suite \u00bb<\/a><\/div>\t\t<\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\n\t\t\t\t<div class=\"premium-blog-post-outer-container\" data-total=\"3\">\n\t\t\t<div class=\"premium-blog-post-container premium-blog-skin-classic\">\n\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumb-effect-wrapper\">\n\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-container premium-blog-zoomin-effect\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"7000\" height=\"2322\" src=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/ALGINATE-1.jpg?fit=7000%2C2322&amp;ssl=1\" class=\"attachment-full size-full wp-image-63128\" alt=\"\" data-attachment-id=\"63128\" data-permalink=\"https:\/\/rheolution.com\/fr\/alginate-2-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/ALGINATE-1.jpg?fit=7000%2C2322&amp;ssl=1\" data-orig-size=\"7000,2322\" data-comments-opened=\"1\" data-image-title=\"ALGINATE\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/ALGINATE-1.jpg?fit=1024%2C340&amp;ssl=1\" srcset=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/ALGINATE-1.jpg?w=7000&amp;ssl=1 7000w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/ALGINATE-1.jpg?resize=300%2C100&amp;ssl=1 300w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/ALGINATE-1.jpg?resize=1024%2C340&amp;ssl=1 1024w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/ALGINATE-1.jpg?resize=768%2C255&amp;ssl=1 768w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/ALGINATE-1.jpg?resize=1536%2C510&amp;ssl=1 1536w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/ALGINATE-1.jpg?resize=2048%2C679&amp;ssl=1 2048w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/ALGINATE-1.jpg?resize=150%2C50&amp;ssl=1 150w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/ALGINATE-1.jpg?resize=700%2C232&amp;ssl=1 700w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/ALGINATE-1.jpg?w=2440&amp;ssl=1 2440w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/ALGINATE-1.jpg?w=3660&amp;ssl=1 3660w\" sizes=\"(max-width:767px) 700px, (max-width:7000px) 100vw, 7000px\" \/>\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-overlay\">\n\t\t\t\t\t\t\t\t<a class=\"elementor-icon\" href=\"https:\/\/rheolution.com\/fr\/notes-application\/hydrogels-dalginate\/\" target=\"_blank\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-screen-only\">Hydrogels d&rsquo;alginate<\/span>\n\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-content-wrapper \">\n\n\t\t\t\t\t<div class=\"premium-blog-inner-container\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<h4 class=\"premium-blog-entry-title\">\n\t\t\t<a href=\"https:\/\/rheolution.com\/fr\/notes-application\/hydrogels-dalginate\/\" target=\"_blank\">\n\t\t\t\tHydrogels d&rsquo;alginate\t\t\t<\/a>\n\t\t<\/h4>\n\t\t\t\t<div class=\"premium-blog-entry-meta\">\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t<div class=\"premium-blog-content-inner-wrapper\">\n\t\t<p class=\"premium-blog-post-content\">Les hydrogels d'alginate sont des r\u00e9seaux polym\u00e8res tridimensionnels riches en eau, d\u00e9riv\u00e9s de l'alginate, un polysaccharide anionique d'origine naturelle. L'alginate est principalement extrait des parois cellulaires des algues brunes appartenant \u00e0 la classe des ph\u00e9ophyc\u00e9es, bien qu'il puisse \u00e9galement \u00eatre biosynth\u00e9tis\u00e9 par certaines esp\u00e8ces bact\u00e9riennes telles que les Azotobacter et les Pseudomonas. Sur le plan structurel, l\u2019alginate est un copolym\u00e8re lin\u00e9aire compos\u00e9 d\u2019acide \u03b2-D-mannuronique (unit\u00e9s M) et d\u2019acide \u03b1-L-guluronique (unit\u00e9s G), reli\u00e9s par des liaisons glycosidiques 1\u21924.<\/p><div class=\"premium-blog-excerpt-link-wrap\"><a href=\"https:\/\/rheolution.com\/fr\/notes-application\/hydrogels-dalginate\/\" target=\"_blank\" class=\"premium-blog-excerpt-link elementor-button\">Lire la suite \u00bb<\/a><\/div>\t\t<\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\n\t\t\t\t<div class=\"premium-blog-post-outer-container\" data-total=\"3\">\n\t\t\t<div class=\"premium-blog-post-container premium-blog-skin-classic\">\n\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumb-effect-wrapper\">\n\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-container premium-blog-zoomin-effect\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"7875\" height=\"2612\" src=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Gelatin-Methacrylate-1.jpg?fit=7875%2C2612&amp;ssl=1\" class=\"attachment-full size-full wp-image-63420\" alt=\"\" data-attachment-id=\"63420\" data-permalink=\"https:\/\/rheolution.com\/fr\/gelatin-methacrylate-2-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Gelatin-Methacrylate-1.jpg?fit=7875%2C2612&amp;ssl=1\" data-orig-size=\"7875,2612\" data-comments-opened=\"1\" data-image-title=\"Gelatin Methacrylate\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Gelatin-Methacrylate-1.jpg?fit=1024%2C340&amp;ssl=1\" srcset=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Gelatin-Methacrylate-1.jpg?w=7875&amp;ssl=1 7875w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Gelatin-Methacrylate-1.jpg?resize=300%2C100&amp;ssl=1 300w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Gelatin-Methacrylate-1.jpg?resize=1024%2C340&amp;ssl=1 1024w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Gelatin-Methacrylate-1.jpg?resize=768%2C255&amp;ssl=1 768w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Gelatin-Methacrylate-1.jpg?resize=1536%2C509&amp;ssl=1 1536w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Gelatin-Methacrylate-1.jpg?resize=2048%2C679&amp;ssl=1 2048w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Gelatin-Methacrylate-1.jpg?resize=150%2C50&amp;ssl=1 150w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Gelatin-Methacrylate-1.jpg?resize=700%2C232&amp;ssl=1 700w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Gelatin-Methacrylate-1.jpg?w=2440&amp;ssl=1 2440w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Gelatin-Methacrylate-1.jpg?w=3660&amp;ssl=1 3660w\" sizes=\"(max-width:767px) 700px, (max-width:7875px) 100vw, 7875px\" \/>\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-overlay\">\n\t\t\t\t\t\t\t\t<a class=\"elementor-icon\" href=\"https:\/\/rheolution.com\/fr\/notes-application\/gelma-hydrogels\/\" target=\"_blank\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-screen-only\">Hydrogels GelMA<\/span>\n\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-content-wrapper \">\n\n\t\t\t\t\t<div class=\"premium-blog-inner-container\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<h4 class=\"premium-blog-entry-title\">\n\t\t\t<a href=\"https:\/\/rheolution.com\/fr\/notes-application\/gelma-hydrogels\/\" target=\"_blank\">\n\t\t\t\tHydrogels GelMA\t\t\t<\/a>\n\t\t<\/h4>\n\t\t\t\t<div class=\"premium-blog-entry-meta\">\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t<div class=\"premium-blog-content-inner-wrapper\">\n\t\t<p class=\"premium-blog-post-content\">La g\u00e9latine m\u00e9thacryloyle (GelMA) est un hydrogel photor\u00e9ticulable d\u00e9riv\u00e9 de la g\u00e9latine, elle-m\u00eame obtenue par hydrolyse partielle du collag\u00e8ne, la principale prot\u00e9ine structurelle de la matrice extracellulaire (MEC). Le GelMA est synth\u00e9tis\u00e9 par r\u00e9action de la g\u00e9latine avec de l'anhydride m\u00e9thacrylique, ce qui permet d'introduire des groupes fonctionnels m\u00e9thacryloyle sur les r\u00e9sidus d'acides amin\u00e9s de la g\u00e9latine tout en pr\u00e9servant la plupart de ses motifs bioactifs natifs.<\/p><div class=\"premium-blog-excerpt-link-wrap\"><a href=\"https:\/\/rheolution.com\/fr\/notes-application\/gelma-hydrogels\/\" target=\"_blank\" class=\"premium-blog-excerpt-link elementor-button\">Lire la suite \u00bb<\/a><\/div>\t\t<\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\n\t\t\t\t<div class=\"premium-blog-post-outer-container\" data-total=\"3\">\n\t\t\t<div class=\"premium-blog-post-container premium-blog-skin-classic\">\n\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumb-effect-wrapper\">\n\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-container premium-blog-zoomin-effect\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"7875\" height=\"2612\" src=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Polydimethylsiloxane-PDMS-1.jpg?fit=7875%2C2612&amp;ssl=1\" class=\"attachment-full size-full wp-image-63388\" alt=\"\" data-attachment-id=\"63388\" data-permalink=\"https:\/\/rheolution.com\/fr\/polydimethylsiloxane-pdms-2-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Polydimethylsiloxane-PDMS-1.jpg?fit=7875%2C2612&amp;ssl=1\" data-orig-size=\"7875,2612\" data-comments-opened=\"1\" data-image-title=\"Polydimethylsiloxane (PDMS)\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Polydimethylsiloxane-PDMS-1.jpg?fit=1024%2C340&amp;ssl=1\" srcset=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Polydimethylsiloxane-PDMS-1.jpg?w=7875&amp;ssl=1 7875w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Polydimethylsiloxane-PDMS-1.jpg?resize=300%2C100&amp;ssl=1 300w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Polydimethylsiloxane-PDMS-1.jpg?resize=1024%2C340&amp;ssl=1 1024w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Polydimethylsiloxane-PDMS-1.jpg?resize=768%2C255&amp;ssl=1 768w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Polydimethylsiloxane-PDMS-1.jpg?resize=1536%2C509&amp;ssl=1 1536w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Polydimethylsiloxane-PDMS-1.jpg?resize=2048%2C679&amp;ssl=1 2048w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Polydimethylsiloxane-PDMS-1.jpg?resize=150%2C50&amp;ssl=1 150w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Polydimethylsiloxane-PDMS-1.jpg?resize=700%2C232&amp;ssl=1 700w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Polydimethylsiloxane-PDMS-1.jpg?w=2440&amp;ssl=1 2440w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/Polydimethylsiloxane-PDMS-1.jpg?w=3660&amp;ssl=1 3660w\" sizes=\"(max-width:767px) 700px, (max-width:7875px) 100vw, 7875px\" \/>\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-overlay\">\n\t\t\t\t\t\t\t\t<a class=\"elementor-icon\" href=\"https:\/\/rheolution.com\/fr\/notes-application\/polymeres-pdms\/\" target=\"_blank\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-screen-only\">Polym\u00e8res PDMS<\/span>\n\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-content-wrapper \">\n\n\t\t\t\t\t<div class=\"premium-blog-inner-container\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<h4 class=\"premium-blog-entry-title\">\n\t\t\t<a href=\"https:\/\/rheolution.com\/fr\/notes-application\/polymeres-pdms\/\" target=\"_blank\">\n\t\t\t\tPolym\u00e8res PDMS\t\t\t<\/a>\n\t\t<\/h4>\n\t\t\t\t<div class=\"premium-blog-entry-meta\">\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\n\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t<div class=\"premium-blog-content-inner-wrapper\">\n\t\t<p class=\"premium-blog-post-content\">Le polydim\u00e9thylsiloxane (PDMS) est un polym\u00e8re polysiloxane synth\u00e9tique compos\u00e9 d\u2019un squelette siloxane inorganique souple (\u2013Si\u2013O\u2013Si\u2013) comportant des groupes lat\u00e9raux m\u00e9thyle. Cette architecture inorganique-organique unique conf\u00e8re au PDMS une mobilit\u00e9 de cha\u00eene exceptionnelle, une tr\u00e8s basse temp\u00e9rature de transition vitreuse et un comportement \u00e9lastom\u00e8re stable sur une large plage de temp\u00e9ratures. Le PDMS est produit exclusivement par synth\u00e8se industrielle, impliquant g\u00e9n\u00e9ralement l\u2019hydrolyse et la condensation de chlorosilanes, suivies d\u2019une polym\u00e9risation par ouverture de cycle de siloxanes cycliques.<\/p><div class=\"premium-blog-excerpt-link-wrap\"><a href=\"https:\/\/rheolution.com\/fr\/notes-application\/polymeres-pdms\/\" target=\"_blank\" class=\"premium-blog-excerpt-link elementor-button\">Lire la suite \u00bb<\/a><\/div>\t\t<\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<div class=\"premium-blog-footer\">\n\t\t\t\t\t\t\t<nav class=\"premium-blog-pagination-container\" role=\"navigation\" aria-label=\"Pagination\">\n\t\t\t\t<span aria-current=\"page\" class=\"page-numbers current\">1<\/span>\n<a class=\"page-numbers\" href=\"https:\/\/rheolution.com\/fr\/wp-json\/wp\/v2\/posts\/65602\/page\/2\/\">2<\/a>\n<a class=\"page-numbers\" href=\"https:\/\/rheolution.com\/fr\/wp-json\/wp\/v2\/posts\/65602\/page\/3\/\">3<\/a>\n<a class=\"next page-numbers\" href=\"https:\/\/rheolution.com\/fr\/wp-json\/wp\/v2\/posts\/65602\/page\/2\/\">Suivant \u00bb<\/a>\t\t\t<\/nav>\n\t\t\t\t\t\t<\/div>\n\t\t\n\t\t\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Les hydrogels d&rsquo;alginate sont des r\u00e9seaux polym\u00e8res tridimensionnels riches en eau, d\u00e9riv\u00e9s de l&rsquo;alginate, un polysaccharide anionique d&rsquo;origine naturelle. L&rsquo;alginate est principalement extrait des parois cellulaires des algues brunes appartenant \u00e0 la classe des ph\u00e9ophyc\u00e9es, bien qu&rsquo;il puisse \u00e9galement \u00eatre biosynth\u00e9tis\u00e9 par certaines esp\u00e8ces bact\u00e9riennes telles que les Azotobacter et les Pseudomonas. Sur le plan structurel, l\u2019alginate est un copolym\u00e8re lin\u00e9aire compos\u00e9 d\u2019acide \u03b2-D-mannuronique (unit\u00e9s M) et d\u2019acide \u03b1-L-guluronique (unit\u00e9s G), reli\u00e9s par des liaisons glycosidiques 1\u21924.    <\/p>\n","protected":false},"author":195401359,"featured_media":63128,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[285,333],"tags":[89,124,88,261],"class_list":["post-65602","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-notes-application","category-polymer-library","tag-elastosens-bio","tag-life-sciences","tag-mechanical-testing","tag-polymer"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 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