{"id":65641,"date":"2026-01-22T11:44:34","date_gmt":"2026-01-22T16:44:34","guid":{"rendered":"https:\/\/rheolution.com\/?p=65641"},"modified":"2026-08-14T09:50:51","modified_gmt":"2026-08-14T13:50:51","slug":"polimeri-di-poliuretano","status":"publish","type":"post","link":"https:\/\/rheolution.com\/it\/note-applicative\/polimeri-di-poliuretano\/","title":{"rendered":"Polimeri di poliuretano (PU)"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"65641\" class=\"elementor elementor-65641 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\">Nota applicativa | 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\">Polimeri di poliuretano (PU): propriet\u00e0, applicazioni e comportamento meccanico<\/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>di <a href=\"https:\/\/www.linkedin.com\/in\/mayasalame\/\">Maya Salame<\/a> e <a href=\"https:\/\/www.linkedin.com\/in\/dimitria-camas%C3%A3o-049002a2\/\">Dimitria Camasao<\/a><\/p><p>Ricercatori applicativi<\/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\">Cos\u2019\u00e8 il poliuretano (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\">I poliuretani (PU) sono una famiglia versatile di polimeri sintetici caratterizzati dalla presenza di legami uretanici (carbammati) nella loro struttura principale. Vengono sintetizzati industrialmente tramite reazioni di polimerizzazione a crescita graduale tra diisocianati e polioli, seguite dall\u2019estensione della catena utilizzando dioli o diamine a basso peso molecolare. L&#8217;architettura macromolecolare che ne risulta \u00e8 tipicamente segmentata, costituita da segmenti morbidi (derivati da polioli polietere, poliestere o policarbonato) e segmenti rigidi (formati da diisocianati ed estensori di catena).   Questa struttura segmentata porta alla separazione in microfasi, che \u00e8 fondamentale per le propriet\u00e0 meccaniche, termiche e biologiche regolabili dei materiali in poliuretano.<\/span><\/p><p><span style=\"font-weight: 400\">I poliuretani sono interamente sintetici e vengono prodotti a partire da precursori petrolchimici o, sempre pi\u00f9 spesso, di origine biologica. La loro sintesi pu\u00f2 avvenire in un unico passaggio o in due fasi (prepolimero), consentendo di controllare il peso molecolare, la distribuzione dei segmenti e le prestazioni finali del materiale. A seconda della composizione e della lavorazione, i poliuretani possono essere formulati come elastomeri termoplastici, termoindurenti, schiume, membrane o idrogel. Questa adattabilit\u00e0 ne ha favorito l\u2019ampio utilizzo nei dispositivi biomedici, nelle medicazioni per ferite e negli scaffold per l\u2019ingegneria tissutale.   <\/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\">Propriet\u00e0 principali del poliuretano<\/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\">Caratteristiche fisico-chimiche<\/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 formazione del poliuretano si basa su reazioni chimiche ben definite e su principi di progettazione strutturale che determinano il comportamento finale del materiale.<\/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\">I meccanismi di polimerizzazione e formazione della rete includono:<\/span><\/p><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Reazioni di poliaddizione tra diisocianati e polioli.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Strategie di sintesi in un unico passaggio o in due passaggi (basate su prepolimeri).<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Formazione di copolimeri a blocchi segmentati con domini a separazione di microfasi.<\/span><\/li><\/ul><p><span style=\"font-weight: 400\">Le strategie di reticolazione e di controllo strutturale includono:<\/span><\/p><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Reticolazione fisica tramite legami idrogeno tra i segmenti rigidi.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Reticolazione chimica tramite isocianati multifunzionali o polioli.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Reti polimeriche interpenetranti formate combinando il PU con sistemi polimerici secondari.<\/span><\/li><\/ul><p><span style=\"font-weight: 400\">Tra i fattori ambientali e composizionali che influenzano la formazione dei polimeri ci sono:<\/span><\/p><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Tipo di isocianato (aromatico o alifatico).<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Tipo di segmento morbido (polietere, poliestere, policarbonato).<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Rapporto tra segmenti morbidi e segmenti rigidi, che determina l\u2019elasticit\u00e0, la resistenza e il comportamento al degrado.<\/span><\/li><\/ul><p><span style=\"font-weight: 400\">Queste variabili fisico-chimiche permettono di regolare con precisione l&#8217;idrofilicit\u00e0, la stabilit\u00e0 termica, la lavorabilit\u00e0 e l&#8217;interazione con ambienti acquosi o biologici.<\/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\">Propriet\u00e0 meccaniche<\/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\">Il comportamento meccanico dei polimeri poliuretanici \u00e8 una delle loro caratteristiche principali e dipende in larga misura dalla formulazione e dalla struttura.<\/span><\/p><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">I poliuretani possono presentare un\u2019ampia gamma di rigidit\u00e0, dai materiali morbidi e altamente elastici agli elastomeri meccanicamente resistenti.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">La separazione microfase tra segmenti morbidi e rigidi garantisce elasticit\u00e0 unita a resistenza meccanica e resistenza alla fatica.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Aumentare la percentuale di segmenti rigidi migliora in genere la resistenza alla trazione e il modulo di elasticit\u00e0, mentre una maggiore percentuale di segmenti morbidi aumenta la flessibilit\u00e0 e l\u2019estensibilit\u00e0.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">I poliuretani a base di policarbonato mostrano in genere una stabilit\u00e0 meccanica e una resistenza alla degradazione idrolitica superiori rispetto ai sistemi a base di polietere.<\/span><\/li><\/ul><p><span style=\"font-weight: 400\">Le formulazioni di poliuretano degradabile mostrano un\u2019evoluzione meccanica che varia nel tempo, in cui il modulo e la resistenza diminuiscono man mano che le catene polimeriche subiscono una degradazione idrolitica, ossidativa o enzimatica. Questo comportamento \u00e8 particolarmente rilevante per gli impianti biomedici temporanei e gli scaffold destinati a essere sostituiti dal tessuto in via di rigenerazione. <\/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\">Interazioni biologiche<\/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\">I poliuretani sono stati oggetto di studi approfonditi per quanto riguarda le loro interazioni con i sistemi biologici, soprattutto in ambito medico e nell&#8217;ingegneria tissutale.<\/span><\/p><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Le superfici in PU favoriscono l&#8217;adesione, la diffusione e la proliferazione di diversi tipi di cellule, tra cui fibroblasti, cellule endoteliali, osteoblasti e cellule staminali.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">I poliuretani formulati correttamente mostrano una buona biocompatibilit\u00e0 e una bassa citotossicit\u00e0 sia in vitro che in vivo.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">L&#8217;assenza di motivi bioattivi intrinseci significa che le interazioni cellulari sono mediate principalmente dalla chimica della superficie, dalla topografia e dagli stimoli meccanici.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">I prodotti di degradazione e le velocit\u00e0 di degradazione dipendono fortemente dalla composizione chimica del polimero; i sistemi alifatici e a base di policarbonato sono generalmente preferiti per la loro maggiore tolleranza biologica.<\/span><\/li><\/ul><p><span style=\"font-weight: 400\">Queste caratteristiche rendono il poliuretano un materiale di base affidabile che pu\u00f2 essere ulteriormente funzionalizzato per potenziare specifiche risposte biologiche.<\/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\">Applicazioni del poliuretano<\/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\">Ingegneria dei tessuti<\/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\">I polimeri poliuretanici sono ampiamente utilizzati come materiali per scaffold nell\u2019ingegneria tissutale grazie alla loro elasticit\u00e0 regolabile e alla stabilit\u00e0 strutturale. Le loro propriet\u00e0 meccaniche possono essere adattate per assomigliare a quelle dei tessuti molli come la cartilagine, i muscoli o la pelle. Gli scaffold porosi in PU, realizzati con tecniche come la schiumatura, l\u2019elettrofilatura, la liofilizzazione o la produzione additiva, favoriscono l\u2019infiltrazione cellulare, l\u2019integrazione tissutale e, nelle formulazioni degradabili, il graduale trasferimento del carico al tessuto in via di rigenerazione.  <\/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\">Coltura cellulare 3D e modelli di malattia<\/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\">Nei sistemi di coltura cellulare tridimensionali, gli scaffold e gli idrogel a base di poliuretano offrono ambienti con caratteristiche meccaniche ben definite che influenzano la morfologia, la differenziazione e la funzione delle cellule. La loro compatibilit\u00e0 con tecniche di fabbricazione avanzate, tra cui la stampa a estrusione e il bioplotting, permette di creare strutture con pori di dimensioni controllate, anisotropia e gradienti di rigidit\u00e0. Queste caratteristiche sono preziose per modellare microambienti specifici dei tessuti e le alterazioni meccaniche legate alle malattie.  <\/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\">Somministrazione di farmaci, geni e cellule<\/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\">I materiali in poliuretano vengono utilizzati anche come vettori o matrici per applicazioni di rilascio controllato. La loro struttura segmentata permette di incorporare domini idrofili o idrofobici, consentendo l\u2019incapsulamento e il rilascio prolungato di agenti terapeutici. Gli idrogel in PU iniettabili o a memoria di forma possono adattarsi a siti di difetto irregolari, garantendo il rilascio localizzato di farmaci o cellule pur mantenendo l\u2019integrit\u00e0 meccanica durante il processo di guarigione.  <\/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\">Perch\u00e9 la viscoelasticit\u00e0 del poliuretano \u00e8 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\">Il comportamento viscoelastico del poliuretano \u00e8 fondamentale per le sue prestazioni nelle applicazioni biologiche e funzionali. Molti tessuti bersaglio mostrano risposte meccaniche che dipendono dal tempo, e i materiali in PU possono essere progettati per riprodurre queste caratteristiche. La viscoelasticit\u00e0 influenza il modo in cui le sollecitazioni si distribuiscono sotto carico, come le cellule percepiscono e rispondono al loro ambiente e come i materiali si comportano sotto deformazione ciclica o a lungo termine. Adattare le propriet\u00e0 viscoelastiche dei costrutti a base di PU a quelle dei tessuti naturali migliora la compatibilit\u00e0 meccanica, la durata e i risultati biologici.   <\/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\">Metodi per caratterizzare la viscoelasticit\u00e0 del poliuretano<\/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\">Le propriet\u00e0 meccaniche e viscoelastiche dei polimeri poliuretanici vengono solitamente caratterizzate utilizzando:<\/span><\/p><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Prove di trazione e compressione per misurare il modulo elastico, la resistenza e l&#8217;allungamento.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Analisi meccanica dinamica e reometria per valutare i moduli di conservazione e di perdita e il comportamento in funzione del tempo.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Prove di fatica e di carico ciclico per valutare la resistenza alla deformazione ripetuta.<\/span><\/li><\/ul><p><span style=\"font-weight: 400\">I metodi tradizionali di analisi meccanica spesso richiedono una preparazione distruttiva dei campioni, offrono una risoluzione temporale limitata e potrebbero non rilevare le fasi iniziali della polimerizzazione o i cambiamenti pi\u00f9 sottili che si verificano durante la degradazione. Queste limitazioni sono particolarmente rilevanti per i sistemi in poliuretano morbidi o idratati. <\/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: uno strumento non distruttivo per misurare i polimeri morbidi di poliuretano<\/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\">Il <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\">\u00e8 uno strumento non distruttivo e senza contatto, progettato per la caratterizzazione viscoelastica di materiali polimerici morbidi come gli idrogel di poliuretano e gli elastomeri. Funziona monitorando le variazioni della frequenza di risonanza indotte da piccole perturbazioni meccaniche, consentendo la misurazione in tempo reale della rigidit\u00e0 e dell&#8217;evoluzione viscoelastica. <\/span><\/p><p><span style=\"font-weight: 400\">Per i sistemi a base di poliuretano morbido, ElastoSens\u2122 Bio \u00e8 particolarmente indicato perch\u00e9:<\/span><\/p><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Misura materiali morbidi e altamente deformabili con elevata sensibilit\u00e0 e ripetibilit\u00e0.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Permette il monitoraggio continuo e in tempo reale della polimerizzazione, dell&#8217;indurimento o della formazione della rete.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Permette di effettuare test longitudinali sullo stesso campione nel corso del tempo, anche in condizioni sterili.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Supporta flussi di lavoro non distruttivi che preservano l&#8217;integrit\u00e0 del campione e la sua rilevanza biologica.<\/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-43562\" 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=\"43562\" data-permalink=\"https:\/\/rheolution.com\/it\/elastosens2-4-2-2\/\" 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-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" 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\">Queste caratteristiche lo rendono uno strumento potente per studiare lo sviluppo meccanico, la stabilit\u00e0 e il degrado dei materiali morbidi in poliuretano nella ricerca e sviluppo biomedico.<\/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\">Conclusioni e prospettive<\/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\">Il comportamento meccanico dei polimeri morbidi in poliuretano (PU) \u2014 determinato dall\u2019architettura segmentale, dalla densit\u00e0 di reticolazione e dalla viscoelasticit\u00e0 dipendente dal tempo \u2014 \u00e8 fondamentale per le loro prestazioni nelle applicazioni biomediche e nei materiali morbidi. Dato che i sistemi in PU possono trasformarsi da precursori liquidi o semiliquidi in reti elastiche e continuare a cambiare nel tempo, le loro propriet\u00e0 meccaniche traggono vantaggio da metodi di caratterizzazione che preservano la struttura e la sterilit\u00e0. <\/span><\/p><p><span style=\"font-weight: 400\">La caratterizzazione viscoelastica non distruttiva con ElastoSens\u2122 Bio permette di:<\/span><\/p><ul><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Misure ad alta sensibilit\u00e0 e ripetibili, pensate appositamente per i materiali in PU morbido.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Monitoraggio in tempo reale della cinetica di gelificazione e identificazione del punto di transizione liquido-gel.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Determinazione accurata della rigidit\u00e0 finale e della maturazione della rete.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Test longitudinali sullo stesso campione di PU per monitorarne l&#8217;evoluzione meccanica in condizioni sterili.<\/span><\/li><li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Fotostimolazione integrata per monitorare in tempo reale i processi di fotoreticolazione e polimerizzazione.<\/span><\/li><\/ul><p><span style=\"font-weight: 400\">Nel loro insieme, queste funzionalit\u00e0 consentono di comprendere meglio, ottimizzare e garantire la riproducibilit\u00e0 dei sistemi polimerici morbidi a base di 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\">Riferimenti<\/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>Polymers, 15(21), 4301.<\/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>Tissue Engineering Part B: Reviews, 26(3), 272-283.<\/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>Polymers, 14(9), 1672.<\/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>Cell Reports Physical Science, 5(7).<\/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>Scopri come la nostra tecnologia misura in modo non distruttivo le propriet\u00e0 viscoelastiche dei biomateriali morbidi e dei tessuti utilizzando microvolumi di campioni<\/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\">Contattaci per saperne di pi\u00f9<\/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\">Articoli correlati<\/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\" 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data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" 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\/it\/note-applicative\/idrogel-di-alginato\/\" target=\"_blank\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-screen-only\">Idrogel di alginato<\/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\/it\/note-applicative\/idrogel-di-alginato\/\" target=\"_blank\">\n\t\t\t\tIdrogel di alginato\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\">Gli idrogel di alginato sono reti polimeriche tridimensionali ricche d'acqua, derivate dall'alginato, un polisaccaride anionico presente in natura. L'alginato viene estratto principalmente dalle pareti cellulari delle alghe brune appartenenti alla classe delle Phaeophyceae, anche se pu\u00f2 essere biosintetizzato da alcune specie batteriche come l'Azotobacter e lo Pseudomonas. Dal punto di vista strutturale, l\u2019alginato \u00e8 un copolimero lineare composto da acido \u03b2-D-mannuronico (unit\u00e0 M) e acido \u03b1-L-guluronico (unit\u00e0 G) collegati tramite legami glicosidici 1\u21924.<\/p><div class=\"premium-blog-excerpt-link-wrap\"><a href=\"https:\/\/rheolution.com\/it\/note-applicative\/idrogel-di-alginato\/\" target=\"_blank\" class=\"premium-blog-excerpt-link elementor-button\">Leggi di pi\u00f9 \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=\"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-63422\" alt=\"\" data-attachment-id=\"63422\" data-permalink=\"https:\/\/rheolution.com\/it\/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-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" 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\/it\/note-applicative\/gelma-idrogel\/\" target=\"_blank\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-screen-only\">Idrogel 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\/it\/note-applicative\/gelma-idrogel\/\" target=\"_blank\">\n\t\t\t\tIdrogel 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 gelatina metacrililica (GelMA) \u00e8 un idrogel fotoreticolabile derivato dalla gelatina, a sua volta ottenuta dall\u2019idrolisi parziale del collagene, la principale proteina strutturale della matrice extracellulare (ECM). Il GelMA si ottiene facendo reagire la gelatina con l'anidride metacrilica, introducendo gruppi funzionali metacriloilici sui residui amminoacidici della gelatina e conservando al contempo la maggior parte dei suoi motivi bioattivi nativi.<\/p><div class=\"premium-blog-excerpt-link-wrap\"><a href=\"https:\/\/rheolution.com\/it\/note-applicative\/gelma-idrogel\/\" target=\"_blank\" class=\"premium-blog-excerpt-link elementor-button\">Leggi di pi\u00f9 \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\/PMMA-1.jpg?fit=7875%2C2612&amp;ssl=1\" class=\"attachment-full size-full wp-image-63430\" alt=\"\" data-attachment-id=\"63430\" data-permalink=\"https:\/\/rheolution.com\/it\/pmma-2-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/PMMA-1.jpg?fit=7875%2C2612&amp;ssl=1\" data-orig-size=\"7875,2612\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"PMMA\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/PMMA-1.jpg?fit=1024%2C340&amp;ssl=1\" srcset=\"https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/PMMA-1.jpg?w=7875&amp;ssl=1 7875w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/PMMA-1.jpg?resize=300%2C100&amp;ssl=1 300w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/PMMA-1.jpg?resize=1024%2C340&amp;ssl=1 1024w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/PMMA-1.jpg?resize=768%2C255&amp;ssl=1 768w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/PMMA-1.jpg?resize=1536%2C509&amp;ssl=1 1536w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/PMMA-1.jpg?resize=2048%2C679&amp;ssl=1 2048w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/PMMA-1.jpg?resize=150%2C50&amp;ssl=1 150w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/PMMA-1.jpg?resize=700%2C232&amp;ssl=1 700w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/PMMA-1.jpg?w=2440&amp;ssl=1 2440w, https:\/\/i0.wp.com\/rheolution.com\/wp-content\/uploads\/PMMA-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\/it\/note-applicative\/polimeri-pmma\/\" target=\"_blank\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-screen-only\">Polimeri PMMA<\/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\/it\/note-applicative\/polimeri-pmma\/\" target=\"_blank\">\n\t\t\t\tPolimeri PMMA\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\">Il polimetilmetacrilato (PMMA) \u00e8 un polimero sintetico termoplastico che fa parte della famiglia delle resine acriliche. Si ottiene tramite la polimerizzazione radicalica dei monomeri di metilmetacrilato (MMA), dando origine a un polimero lineare e amorfo caratterizzato da un\u2019elevata trasparenza ottica e rigidit\u00e0 strutturale. Il PMMA \u00e8 interamente prodotto industrialmente: l\u2019MMA viene sintetizzato a partire da materie prime petrolchimiche e polimerizzato tramite un processo di innesco termico, chimico o fotochimico controllato.<\/p><div class=\"premium-blog-excerpt-link-wrap\"><a href=\"https:\/\/rheolution.com\/it\/note-applicative\/polimeri-pmma\/\" target=\"_blank\" class=\"premium-blog-excerpt-link elementor-button\">Leggi di pi\u00f9 \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-63390\" alt=\"\" data-attachment-id=\"63390\" data-permalink=\"https:\/\/rheolution.com\/it\/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-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" 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\/it\/note-applicative\/pdms-polimeri\/\" target=\"_blank\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-screen-only\">Polimeri 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\/it\/note-applicative\/pdms-polimeri\/\" target=\"_blank\">\n\t\t\t\tPolimeri 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\">Il polidimetilsilossano (PDMS) \u00e8 un polimero polisilossanico sintetico composto da una struttura principale flessibile di silossano inorganico (\u2013Si\u2013O\u2013Si\u2013) con gruppi laterali metilici. Questa struttura unica, che unisce elementi inorganici e organici, conferisce al PDMS un\u2019eccezionale mobilit\u00e0 della catena, una temperatura di transizione vetrosa molto bassa e un comportamento elastomerico stabile in un ampio intervallo di temperature. Il PDMS viene prodotto esclusivamente tramite sintesi industriale, che in genere prevede l\u2019idrolisi e la condensazione di clorosilani, seguite dalla polimerizzazione ad apertura di anello dei silossani ciclici.<\/p><div class=\"premium-blog-excerpt-link-wrap\"><a href=\"https:\/\/rheolution.com\/it\/note-applicative\/pdms-polimeri\/\" target=\"_blank\" class=\"premium-blog-excerpt-link elementor-button\">Leggi di pi\u00f9 \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\/it\/wp-json\/wp\/v2\/posts\/65641\/page\/2\/\">2<\/a>\n<a class=\"page-numbers\" href=\"https:\/\/rheolution.com\/it\/wp-json\/wp\/v2\/posts\/65641\/page\/3\/\">3<\/a>\n<a class=\"next page-numbers\" href=\"https:\/\/rheolution.com\/it\/wp-json\/wp\/v2\/posts\/65641\/page\/2\/\">Avanti \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>I poliuretani (PU) sono una famiglia versatile di polimeri sintetici caratterizzati dalla presenza di legami uretanici (carbammati) nella loro struttura principale. Vengono sintetizzati industrialmente tramite reazioni di polimerizzazione a crescita graduale tra diisocianati e polioli, seguite dall\u2019estensione della catena con dioli o diamine a basso peso molecolare. L&#8217;architettura macromolecolare che ne risulta \u00e8 tipicamente segmentata, costituita da segmenti morbidi (derivati da polioli polietere, poliestere o policarbonato) e segmenti rigidi (formati da diisocianati ed estensori di catena).  <\/p>\n","protected":false},"author":195401359,"featured_media":63114,"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_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[289,336],"tags":[89,124,88,261],"class_list":["post-65641","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-note-applicative","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 v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Polimeri di 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