{"id":64731,"date":"2026-01-22T11:44:34","date_gmt":"2026-01-22T16:44:34","guid":{"rendered":"https:\/\/rheolution.com\/?p=64731"},"modified":"2026-08-14T09:48:45","modified_gmt":"2026-08-14T13:48:45","slug":"polymeres-de-polyurethane","status":"publish","type":"post","link":"https:\/\/rheolution.com\/fr\/notes-application\/polymeres-de-polyurethane\/","title":{"rendered":"Polym\u00e8res de polyur\u00e9thane (PU)"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"64731\" class=\"elementor elementor-64731 elementor-63219\" 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\">Polym\u00e8res de polyur\u00e9thane (PU) : propri\u00e9t\u00e9s, applications et comportement m\u00e9canique<\/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 que le polyur\u00e9thane (PU) ?<\/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 polyur\u00e9thanes (PU) constituent une famille polyvalente de polym\u00e8res synth\u00e9tiques caract\u00e9ris\u00e9s par la pr\u00e9sence de liaisons ur\u00e9thane (carbamate) dans leur cha\u00eene principale. Ils sont synth\u00e9tis\u00e9s industriellement par des r\u00e9actions de polym\u00e9risation par \u00e9tapes entre des diisocyanates et des polyols, suivies d\u2019une extension de cha\u00eene \u00e0 l\u2019aide de diols ou de diamines de faible poids mol\u00e9culaire. L\u2019architecture macromol\u00e9culaire qui en r\u00e9sulte est g\u00e9n\u00e9ralement segment\u00e9e, compos\u00e9e de segments souples (d\u00e9riv\u00e9s de polyols de type poly\u00e9ther, polyester ou polycarbonate) et de segments rigides (form\u00e9s \u00e0 partir de diisocyanates et d\u2019agents d\u2019allongement de cha\u00eene).   Cette structure segment\u00e9e entra\u00eene une s\u00e9paration de microphases, qui joue un r\u00f4le central dans l\u2019ajustement des propri\u00e9t\u00e9s m\u00e9caniques, thermiques et biologiques des mat\u00e9riaux en polyur\u00e9thane.<\/span><\/p><p><span style=\"font-weight: 400\">Les polyur\u00e9thanes sont enti\u00e8rement synth\u00e9tiques et sont produits \u00e0 partir de pr\u00e9curseurs p\u00e9trochimiques ou, de plus en plus, d\u2019origine biologique. Leur synth\u00e8se peut s\u2019effectuer en une ou deux \u00e9tapes (pr\u00e9polym\u00e8re), ce qui permet de contr\u00f4ler le poids mol\u00e9culaire, la distribution des segments et les performances finales du mat\u00e9riau. En fonction de leur composition et de leur mise en \u0153uvre, les polyur\u00e9thanes peuvent \u00eatre formul\u00e9s sous forme d\u2019\u00e9lastom\u00e8res thermoplastiques, de thermodurcissables, de mousses, de membranes ou d\u2019hydrogels. Cette adaptabilit\u00e9 a favoris\u00e9 leur utilisation g\u00e9n\u00e9ralis\u00e9e dans les dispositifs biom\u00e9dicaux, les pansements et les matrices d\u2019ing\u00e9nierie tissulaire.   <\/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\">Principales propri\u00e9t\u00e9s du polyur\u00e9thane<\/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-f3f79d0 elementor-widget elementor-widget-text-editor\" data-id=\"f3f79d0\" 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 fabrication du polyur\u00e9thane repose sur des r\u00e9actions chimiques bien d\u00e9finies et sur des principes de conception structurelle qui d\u00e9terminent le comportement final du mat\u00e9riau.<\/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-454b0e3 elementor-widget elementor-widget-text-editor\" data-id=\"454b0e3\" 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 m\u00e9canismes de polym\u00e9risation et de formation de r\u00e9seaux comprennent notamment :<\/span><\/p><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">R\u00e9actions de polyaddition entre les diisocyanates et les polyols.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Strat\u00e9gies de synth\u00e8se en une \u00e9tape ou en deux \u00e9tapes (\u00e0 base de pr\u00e9polym\u00e8res).<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Formation de copolym\u00e8res \u00e0 blocs segment\u00e9s pr\u00e9sentant des domaines \u00e0 s\u00e9paration de phases.<\/span><\/li><\/ul><p><span style=\"font-weight: 400\">Les strat\u00e9gies de r\u00e9ticulation et de contr\u00f4le structurel comprennent notamment :<\/span><\/p><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">R\u00e9ticulation physique par liaisons hydrog\u00e8ne entre les segments rigides.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">R\u00e9ticulation chimique par le biais d&rsquo;isocyanates ou de polyols multifonctionnels.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">R\u00e9seaux polym\u00e8res interp\u00e9n\u00e9trants form\u00e9s par l&rsquo;association de PU avec des syst\u00e8mes polym\u00e8res secondaires.<\/span><\/li><\/ul><p><span style=\"font-weight: 400\">Parmi les facteurs environnementaux et de composition influen\u00e7ant la formation des polym\u00e8res, on peut citer :<\/span><\/p><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Type d&rsquo;isocyanate (aromatique ou aliphatique).<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Nature du segment souple (poly\u00e9ther, polyester, polycarbonate).<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Rapport entre les segments souples et les segments rigides, qui d\u00e9termine l&rsquo;\u00e9lasticit\u00e9, la r\u00e9sistance et le comportement \u00e0 la d\u00e9gradation.<\/span><\/li><\/ul><p><span style=\"font-weight: 400\">Ces param\u00e8tres physico-chimiques permettent d&rsquo;ajuster avec pr\u00e9cision l&rsquo;hydrophilie, la stabilit\u00e9 thermique, l&rsquo;aptitude \u00e0 la transformation et l&rsquo;interaction avec des milieux aqueux ou biologiques.<\/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-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\">Le comportement m\u00e9canique des polym\u00e8res de polyur\u00e9thane constitue l&rsquo;une de leurs caract\u00e9ristiques principales et d\u00e9pend fortement de leur formulation et de leur structure.<\/span><\/p><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Les PU peuvent pr\u00e9senter une grande vari\u00e9t\u00e9 de rigidit\u00e9s, allant de mat\u00e9riaux souples et tr\u00e8s \u00e9lastiques \u00e0 des \u00e9lastom\u00e8res m\u00e9caniquement robustes.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">La s\u00e9paration en microphases entre les segments souples et rigides conf\u00e8re \u00e0 ce mat\u00e9riau une \u00e9lasticit\u00e9 alli\u00e9e \u00e0 une r\u00e9sistance m\u00e9canique et \u00e0 une r\u00e9sistance \u00e0 la fatigue.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Une augmentation de la teneur en segments durs am\u00e9liore g\u00e9n\u00e9ralement la r\u00e9sistance \u00e0 la traction et le module d&rsquo;\u00e9lasticit\u00e9, tandis qu&rsquo;une teneur plus \u00e9lev\u00e9e en segments souples accro\u00eet la souplesse et l&rsquo;extensibilit\u00e9.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Les polyur\u00e9thanes \u00e0 base de polycarbonate pr\u00e9sentent g\u00e9n\u00e9ralement une stabilit\u00e9 m\u00e9canique et une r\u00e9sistance \u00e0 la d\u00e9gradation hydrolytique sup\u00e9rieures \u00e0 celles des syst\u00e8mes \u00e0 base de poly\u00e9ther.<\/span><\/li><\/ul><p><span style=\"font-weight: 400\">Les formulations de polyur\u00e9thane d\u00e9gradables pr\u00e9sentent une \u00e9volution m\u00e9canique en fonction du temps, le module et la r\u00e9sistance diminuant \u00e0 mesure que les cha\u00eenes polym\u00e8res subissent une d\u00e9gradation hydrolytique, oxydative ou enzymatique. Ce comportement rev\u00eat une importance particuli\u00e8re pour les implants biom\u00e9dicaux temporaires et les \u00e9chafaudages destin\u00e9s \u00e0 \u00eatre remplac\u00e9s par des tissus en cours de r\u00e9g\u00e9n\u00e9ration. <\/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-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\">Les polyur\u00e9thanes ont fait l&rsquo;objet de nombreuses \u00e9tudes concernant leurs interactions avec les syst\u00e8mes biologiques, notamment dans les domaines de la m\u00e9decine et de l&rsquo;ing\u00e9nierie tissulaire.<\/span><\/p><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Les surfaces en PU favorisent l&rsquo;adh\u00e9rence, l&rsquo;\u00e9talement et la prolif\u00e9ration de nombreux types de cellules, notamment les fibroblastes, les cellules endoth\u00e9liales, les ost\u00e9oblastes et les cellules souches.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Les PU correctement formul\u00e9s pr\u00e9sentent une bonne biocompatibilit\u00e9 et une faible cytotoxicit\u00e9 in vitro et in vivo.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">L&rsquo;absence de motifs bioactifs intrins\u00e8ques signifie que les interactions cellulaires sont principalement r\u00e9gies par la chimie de surface, la topographie et les signaux m\u00e9caniques.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Les produits de d\u00e9gradation et les vitesses de d\u00e9gradation d\u00e9pendent fortement de la composition chimique du polym\u00e8re ; les syst\u00e8mes aliphatiques et \u00e0 base de polycarbonate sont g\u00e9n\u00e9ralement privil\u00e9gi\u00e9s pour leur meilleure tol\u00e9rance biologique.<\/span><\/li><\/ul><p><span style=\"font-weight: 400\">Ces caract\u00e9ristiques font du polyur\u00e9thane un mat\u00e9riau de base fiable qui peut \u00eatre fonctionnalis\u00e9 davantage afin d&rsquo;am\u00e9liorer certaines r\u00e9ponses biologiques sp\u00e9cifiques.<\/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 du polyur\u00e9thane<\/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 polym\u00e8res de polyur\u00e9thane sont largement utilis\u00e9s comme mat\u00e9riaux de support en ing\u00e9nierie tissulaire en raison de leur \u00e9lasticit\u00e9 modulable et de leur stabilit\u00e9 structurelle. Leurs propri\u00e9t\u00e9s m\u00e9caniques peuvent \u00eatre ajust\u00e9es pour correspondre \u00e0 celles des tissus mous tels que le cartilage, le muscle ou la peau. Les \u00e9chafaudages en PU poreux, fabriqu\u00e9s \u00e0 l\u2019aide de techniques telles que le moussage, l\u2019\u00e9lectrofilage, la lyophilisation ou la fabrication additive, favorisent l\u2019infiltration cellulaire, l\u2019int\u00e9gration tissulaire et, dans le cas de formulations d\u00e9gradables, le transfert progressif de la charge vers le tissu en cours de r\u00e9g\u00e9n\u00e9ration.  <\/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\">Dans les syst\u00e8mes de culture cellulaire tridimensionnels, les \u00e9chafaudages et les hydrogels \u00e0 base de polyur\u00e9thane offrent des environnements aux propri\u00e9t\u00e9s m\u00e9caniques bien d\u00e9finies qui influencent la morphologie, la diff\u00e9renciation et la fonction des cellules. Leur compatibilit\u00e9 avec des techniques de fabrication avanc\u00e9es, notamment l\u2019impression par extrusion et le bioplotting, permet de cr\u00e9er des architectures pr\u00e9sentant une taille de pores, une anisotropie et des gradients de rigidit\u00e9 contr\u00f4l\u00e9s. Ces caract\u00e9ristiques sont pr\u00e9cieuses pour mod\u00e9liser des microenvironnements sp\u00e9cifiques aux tissus ainsi que les alt\u00e9rations m\u00e9caniques li\u00e9es \u00e0 certaines 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-ac87f2a elementor-widget elementor-widget-text-editor\" data-id=\"ac87f2a\" 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 mat\u00e9riaux en polyur\u00e9thane sont \u00e9galement utilis\u00e9s comme supports ou matrices pour des applications de lib\u00e9ration contr\u00f4l\u00e9e. Leur structure segment\u00e9e permet l&rsquo;int\u00e9gration de domaines hydrophiles ou hydrophobes, ce qui facilite l&rsquo;encapsulation et la lib\u00e9ration prolong\u00e9e d&rsquo;agents th\u00e9rapeutiques. Les hydrogels de polyur\u00e9thane injectables ou \u00e0 m\u00e9moire de forme peuvent \u00e9pouser les sites de l\u00e9sions irr\u00e9guliers, assurant ainsi une administration localis\u00e9e de m\u00e9dicaments ou de cellules tout en conservant leur int\u00e9grit\u00e9 m\u00e9canique pendant le processus de cicatrisation.  <\/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 du polyur\u00e9thane 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\">Le comportement visco\u00e9lastique du polyur\u00e9thane est au c\u0153ur de ses performances dans les applications biologiques et fonctionnelles. De nombreux tissus cibles pr\u00e9sentent des r\u00e9ponses m\u00e9caniques d\u00e9pendantes du temps, et les mat\u00e9riaux en polyur\u00e9thane peuvent \u00eatre con\u00e7us pour reproduire ces caract\u00e9ristiques. La visco\u00e9lasticit\u00e9 influence la mani\u00e8re dont les contraintes sont r\u00e9parties sous charge, la fa\u00e7on dont les cellules per\u00e7oivent leur environnement et y r\u00e9agissent, ainsi que le comportement des mat\u00e9riaux soumis \u00e0 des d\u00e9formations cycliques ou \u00e0 long terme. L&rsquo;adaptation des propri\u00e9t\u00e9s visco\u00e9lastiques des structures \u00e0 base de polyur\u00e9thane \u00e0 celles des tissus naturels am\u00e9liore la compatibilit\u00e9 m\u00e9canique, la durabilit\u00e9 et les r\u00e9sultats biologiques.   <\/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 du polyur\u00e9thane<\/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 et visco\u00e9lastiques des polym\u00e8res de polyur\u00e9thane sont g\u00e9n\u00e9ralement caract\u00e9ris\u00e9es \u00e0 l&rsquo;aide :<\/span><\/p><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Essais de traction et de compression visant \u00e0 mesurer le module d&rsquo;\u00e9lasticit\u00e9, la r\u00e9sistance et l&rsquo;allongement.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Analyse m\u00e9canique dynamique et rh\u00e9om\u00e9trie pour \u00e9valuer les modules de stockage et de perte, ainsi que le comportement en fonction du temps.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Essais de fatigue et de sollicitation cyclique visant \u00e0 \u00e9valuer la durabilit\u00e9 en cas de d\u00e9formations r\u00e9p\u00e9t\u00e9es.<\/span><\/li><\/ul><p><span style=\"font-weight: 400\">Les m\u00e9thodes traditionnelles d&rsquo;essais m\u00e9caniques n\u00e9cessitent souvent une pr\u00e9paration destructive des \u00e9chantillons, offrent une r\u00e9solution temporelle limit\u00e9e et peuvent ne pas permettre de d\u00e9tecter les premiers stades de la polym\u00e9risation ou les changements subtils survenant au cours de la d\u00e9gradation. Ces limites sont particuli\u00e8rement importantes pour les syst\u00e8mes de polyur\u00e9thane souples ou hydrat\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-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\">ElastoSens\u2122 Bio : un outil non destructif permettant de mesurer les polym\u00e8res souples de polyur\u00e9thane<\/h2>\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><span style=\"font-weight: 400\">L&rsquo; <a href=\"https:\/\/rheolution.com\/instrument-elastosensbio\/\" target=\"_blank\" rel=\"noopener\"><strong>ElastoSens\u2122 Bio <\/strong><\/a> <\/span><span style=\"font-weight: 400\"> <\/span><span style=\"font-weight: 400\">il s&rsquo;agit d&rsquo;un instrument non destructif et sans contact, con\u00e7u pour la caract\u00e9risation visco\u00e9lastique de mat\u00e9riaux polym\u00e8res souples tels que les hydrogels de polyur\u00e9thane et les \u00e9lastom\u00e8res. Il fonctionne en surveillant les variations de fr\u00e9quence de r\u00e9sonance induites par de faibles perturbations m\u00e9caniques, ce qui permet de mesurer en temps r\u00e9el la rigidit\u00e9 et l&rsquo;\u00e9volution visco\u00e9lastique. <\/span><\/p><p><span style=\"font-weight: 400\">Pour les syst\u00e8mes \u00e0 base de polyur\u00e9thane souple, l&rsquo;ElastoSens\u2122 Bio est particuli\u00e8rement adapt\u00e9 car il :<\/span><\/p><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Permet de mesurer des mat\u00e9riaux souples et tr\u00e8s mall\u00e9ables avec une grande sensibilit\u00e9 et une grande r\u00e9p\u00e9tabilit\u00e9.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Permet une surveillance continue et en temps r\u00e9el de la polym\u00e9risation, du durcissement ou de la formation d&rsquo;un r\u00e9seau.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Permet de r\u00e9aliser des essais longitudinaux sur un m\u00eame \u00e9chantillon au fil du temps, y compris dans des conditions st\u00e9riles.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Permet la mise en \u0153uvre de processus non destructifs qui pr\u00e9servent l&rsquo;int\u00e9grit\u00e9 des \u00e9chantillons et leur pertinence biologique.<\/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-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-4c4f175 elementor-widget elementor-widget-text-editor\" data-id=\"4c4f175\" 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 capacit\u00e9s en font un outil puissant pour l&rsquo;\u00e9tude du d\u00e9veloppement m\u00e9canique, de la stabilit\u00e9 et de la d\u00e9gradation des mat\u00e9riaux souples en polyur\u00e9thane dans le domaine de la recherche et du d\u00e9veloppement biom\u00e9dicaux.<\/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-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-b86e41a elementor-widget elementor-widget-text-editor\" data-id=\"b86e41a\" 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 polym\u00e8res souples \u00e0 base de polyur\u00e9thane (PU) \u2014 qui d\u00e9pend de leur architecture segmentaire, de leur densit\u00e9 de r\u00e9ticulation et de leur visco\u00e9lasticit\u00e9 en fonction du temps \u2014 est d\u00e9terminant pour leurs performances dans les applications biom\u00e9dicales et li\u00e9es aux mat\u00e9riaux souples. Les syst\u00e8mes en PU pouvant \u00e9voluer \u00e0 partir de pr\u00e9curseurs liquides ou semi-liquides pour former des r\u00e9seaux \u00e9lastiques et continuer \u00e0 se transformer au fil du temps, leur m\u00e9canique n\u00e9cessite des m\u00e9thodes de caract\u00e9risation qui pr\u00e9servent leur structure et leur st\u00e9rilit\u00e9. <\/span><\/p><p><span style=\"font-weight: 400\">La caract\u00e9risation visco\u00e9lastique non destructive r\u00e9alis\u00e9e avec l&rsquo;ElastoSens\u2122 Bio permet :<\/span><\/p><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Des mesures hautement sensibles et reproductibles, adapt\u00e9es aux mat\u00e9riaux en PU souple.<\/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 identification du point de transition liquide-gel.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">D\u00e9termination pr\u00e9cise de la rigidit\u00e9 finale et de la maturation du r\u00e9seau.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Essais longitudinaux sur le m\u00eame \u00e9chantillon de PU afin de suivre son \u00e9volution m\u00e9canique dans des conditions st\u00e9riles.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Photostimulation int\u00e9gr\u00e9e permettant de suivre en temps r\u00e9el les processus de photor\u00e9ticulation et de durcissement.<\/span><\/li><\/ul><p><span style=\"font-weight: 400\">Ensemble, ces capacit\u00e9s permettent de mieux comprendre, d&rsquo;optimiser et d&rsquo;assurer la reproductibilit\u00e9 des syst\u00e8mes polym\u00e8res souples \u00e0 base de PU.<\/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-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:\/\/www.mdpi.com\/2073-4360\/15\/21\/4301\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400\">Liang, W., Ni, N., Huang, Y., &amp; Lin, C. (2023). An advanced review: Polyurethane-related dressings for skin wound repair.  <\/span><i><span style=\"font-weight: 400\">Polymers<\/span><\/i><span style=\"font-weight: 400\">, <\/span><i><span style=\"font-weight: 400\">15<\/span><\/i><span style=\"font-weight: 400\">(21), 4301.<\/span><\/a><\/p><p><a href=\"https:\/\/journals.sagepub.com\/doi\/10.1089\/ten.teb.2019.0224\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400\">Griffin, M., Castro, N., Bas, O., Saifzadeh, S., Butler, P., &amp; Hutmacher, D. W. (2020). The current versatility of polyurethane three-dimensional printing for biomedical applications.  <\/span><i><span style=\"font-weight: 400\">Tissue Engineering Part B: Reviews<\/span><\/i><span style=\"font-weight: 400\">, <\/span><i><span style=\"font-weight: 400\">26<\/span><\/i><span style=\"font-weight: 400\">(3), 272-283.<\/span><\/a><\/p><p><a href=\"https:\/\/www.mdpi.com\/2073-4360\/14\/9\/1672\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400\">Tan, R. Y. H., Lee, C. S., Pichika, M. R., Cheng, S. F., &amp; Lam, K. Y. (2022). PH responsive polyurethane for the advancement of biomedical and drug delivery.  <\/span><i><span style=\"font-weight: 400\">Polymers<\/span><\/i><span style=\"font-weight: 400\">, <\/span><i><span style=\"font-weight: 400\">14<\/span><\/i><span style=\"font-weight: 400\">(9), 1672.<\/span><\/a><\/p><p><a href=\"https:\/\/www.cell.com\/cell-reports-physical-science\/fulltext\/S2666-3864(24)00322-9\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400\">Dang, G. P., Gu, J. T., Song, J. H., Li, Z. T., Hao, J. X., Wang, Y. Z., &#8230; &amp; Xia, L. Y. (2024). Multifunctional polyurethane materials in regenerative medicine and tissue engineering.  <\/span><i><span style=\"font-weight: 400\">Cell Reports Physical Science<\/span><\/i><span style=\"font-weight: 400\">, <\/span><i><span style=\"font-weight: 400\">5<\/span><\/i><span style=\"font-weight: 400\">(7).<\/span><\/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 class=\"elementor-swiper\">\n\t\t\t\t\t<div class=\"elementor-slides-wrapper elementor-main-swiper swiper\" role=\"region\" aria-roledescription=\"carousel\" aria-label=\"Slides\" dir=\"ltr\" data-animation=\"fadeInUp\">\n\t\t\t\t<div class=\"swiper-wrapper elementor-slides\">\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-repeater-item-c97f30c swiper-slide\" role=\"group\" aria-roledescription=\"slide\"><div class=\"swiper-slide-bg\" role=\"img\" aria-label=\"elastosens2\"><\/div><div class=\"swiper-slide-inner\" ><div class=\"swiper-slide-contents\"><\/div><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\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-8cce0c6 elementor-widget__width-initial elementor-widget-mobile__width-inherit elementor-widget elementor-widget-text-editor\" data-id=\"8cce0c6\" 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>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=\"64731\" 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 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 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\/64731\/page\/2\/\">2<\/a>\n<a class=\"page-numbers\" href=\"https:\/\/rheolution.com\/fr\/wp-json\/wp\/v2\/posts\/64731\/page\/3\/\">3<\/a>\n<a class=\"next page-numbers\" href=\"https:\/\/rheolution.com\/fr\/wp-json\/wp\/v2\/posts\/64731\/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 polyur\u00e9thanes (PU) constituent une famille polyvalente de polym\u00e8res synth\u00e9tiques caract\u00e9ris\u00e9s par la pr\u00e9sence de liaisons ur\u00e9thane (carbamate) dans leur cha\u00eene principale. Ils sont synth\u00e9tis\u00e9s industriellement par des r\u00e9actions de polym\u00e9risation par \u00e9tapes entre des diisocyanates et des polyols, suivies d\u2019une extension de cha\u00eene \u00e0 l\u2019aide de diols ou de diamines de faible poids mol\u00e9culaire. L\u2019architecture macromol\u00e9culaire qui en r\u00e9sulte est g\u00e9n\u00e9ralement segment\u00e9e, compos\u00e9e de segments souples (d\u00e9riv\u00e9s de polyols de type poly\u00e9ther, polyester ou polycarbonate) et de segments rigides (form\u00e9s \u00e0 partir de diisocyanates et d\u2019agents d\u2019allongement de cha\u00eene).  <\/p>\n","protected":false},"author":195401359,"featured_media":63112,"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-64731","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 v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Polym\u00e8res de Polyur\u00e9thane (PU) : Propri\u00e9t\u00e9s et M\u00e9canique<\/title>\n<meta name=\"description\" content=\"Un guide complet sur les polym\u00e8res de polyur\u00e9thane (PU), traitant de leur structure, de leur comportement m\u00e9canique, de leur visco\u00e9lasticit\u00e9 et de leurs applications biom\u00e9dicales.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/rheolution.com\/fr\/notes-application\/polymeres-de-polyurethane\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Polym\u00e8res de Polyur\u00e9thane (PU) : Propri\u00e9t\u00e9s et M\u00e9canique\" \/>\n<meta property=\"og:description\" content=\"Un guide complet sur les polym\u00e8res de polyur\u00e9thane (PU), traitant de 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