{"id":6644,"date":"2025-07-23T04:09:49","date_gmt":"2025-07-23T04:09:49","guid":{"rendered":"https:\/\/saphydrogels.com\/?p=6644"},"modified":"2025-07-24T01:41:03","modified_gmt":"2025-07-24T01:41:03","slug":"what-is-super-absorbent-polymer-answers-to-all-of-your-questions","status":"publish","type":"post","link":"https:\/\/saphydrogels.com\/it\/what-is-super-absorbent-polymer-answers-to-all-of-your-questions\/","title":{"rendered":"Cos'\u00e8 il polimero superassorbente e le risposte a tutte le tue domande"},"content":{"rendered":"<p data-start=\"0\" data-end=\"509\"><strong data-start=\"0\" data-end=\"12\">PANORAMICA<\/strong><br data-start=\"12\" data-end=\"15\" \/>Il polimero superassorbente (SAP), noto anche come materiale superassorbente (SAM), \u00e8 apprezzato nei mercati di consumo e industriali per la sua notevole affinit\u00e0 con l'acqua: assorbe fino a <strong data-start=\"189\" data-end=\"197\">500\u00d7<\/strong> il suo peso in soluzioni acquose e lo blocca in modo permanente. Originariamente sviluppata negli anni '60 dal Dipartimento dell'Agricoltura degli Stati Uniti per la conservazione dell'acqua nel suolo (utilizzando acrilonitrile innestato con amido), la moderna tecnologia SAP si basa su polimeri acrilici reticolati neutralizzati con sodio per ottenere prestazioni superiori.<\/p>\n<p data-start=\"511\" data-end=\"794\">Dal suo debutto negli assorbenti igienici nel 1978 e nei pannolini per bambini nel 1982, il SAP \u00e8 diventato indispensabile nei prodotti per l'igiene. Oggi la produzione globale supera <strong data-start=\"664\" data-end=\"682\">3 milioni di tonnellate<\/strong> annualmente, principalmente per la produzione di assorbenti per l'igiene femminile, pannolini per bambini e adulti e altre applicazioni per l'incontinenza.<\/p>\n<hr data-start=\"796\" data-end=\"799\" \/>\n<h2 data-start=\"801\" data-end=\"830\">CHIMICA SUPERASSORBENTE<\/h2>\n<h3 data-start=\"832\" data-end=\"854\">Formazione di SAP<\/h3>\n<p data-start=\"855\" data-end=\"1092\">I superassorbenti GELSAP\u2122 sono sintetizzati facendo reagire l'acido acrilico con l'idrossido di sodio e un cross-linker (ad esempio, TMPTA o tetraallil etossano), ottenendo una rete di poliacrilato di sodio. Vengono utilizzati tre metodi di polimerizzazione principali:<\/p>\n<ol data-start=\"1094\" data-end=\"2057\">\n<li data-start=\"1094\" data-end=\"1419\">\n<p data-start=\"1097\" data-end=\"1121\"><strong data-start=\"1097\" data-end=\"1119\">Polimerizzazione del gel<\/strong><\/p>\n<ul data-start=\"1125\" data-end=\"1419\">\n<li data-start=\"1125\" data-end=\"1263\">\n<p data-start=\"1127\" data-end=\"1263\"><strong data-start=\"1127\" data-end=\"1139\">Processo:<\/strong> Acido acrilico, NaOH, acqua, reticolanti e iniziatori UV vengono spruzzati su un nastro mobile sotto lampade UV ad alta intensit\u00e0.<\/p>\n<\/li>\n<li data-start=\"1267\" data-end=\"1419\">\n<p data-start=\"1269\" data-end=\"1419\"><strong data-start=\"1269\" data-end=\"1280\">Risultato:<\/strong> Un \"panetto umido\" gonfio che viene macinato, essiccato e, facoltativamente, incrociato con la superficie per ottimizzare l'assorbenza, la velocit\u00e0 di acquisizione e la permeabilit\u00e0.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li data-start=\"1421\" data-end=\"1752\">\n<p data-start=\"1424\" data-end=\"1455\"><strong data-start=\"1424\" data-end=\"1453\">Polimerizzazione in sospensione<\/strong><\/p>\n<ul data-start=\"1459\" data-end=\"1752\">\n<li data-start=\"1459\" data-end=\"1566\">\n<p data-start=\"1461\" data-end=\"1566\"><strong data-start=\"1461\" data-end=\"1473\">Processo:<\/strong> I monomeri e gli additivi vengono sospesi in un solvente organico, formando perle di SAP reticolate.<\/p>\n<\/li>\n<li data-start=\"1570\" data-end=\"1752\">\n<p data-start=\"1572\" data-end=\"1752\"><strong data-start=\"1572\" data-end=\"1584\">Controllo:<\/strong> Le condizioni del reattore (temperatura, agitazione, tempo di permanenza) determinano le dimensioni delle perle. Dopo la filtrazione, l'essiccazione e la reticolazione superficiale opzionale, le perle vengono confezionate alla rinfusa.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li data-start=\"1754\" data-end=\"2057\">\n<p data-start=\"1757\" data-end=\"1786\"><strong data-start=\"1757\" data-end=\"1784\">Polimerizzazione in soluzione<\/strong><\/p>\n<ul data-start=\"1790\" data-end=\"2057\">\n<li data-start=\"1790\" data-end=\"1909\">\n<p data-start=\"1792\" data-end=\"1909\"><strong data-start=\"1792\" data-end=\"1804\">Processo:<\/strong> L'acido acrilico e i reagenti si dissolvono in un solvente non reattivo, polimerizzando in una soluzione liquida SAP.<\/p>\n<\/li>\n<li data-start=\"1913\" data-end=\"2057\">\n<p data-start=\"1915\" data-end=\"2057\"><strong data-start=\"1915\" data-end=\"1931\">Applicazione:<\/strong> Spalmato su cellulosa o fibre non tessute ed essiccato in linea per produrre substrati potenziati con SAP per anime di laminati o stratificati ad aria.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<hr data-start=\"2059\" data-end=\"2062\" \/>\n<h2 data-start=\"2064\" data-end=\"2093\">MECCANISMO DI ASSORBIMENTO DELLA LINFA<\/h2>\n<ul data-start=\"2095\" data-end=\"2598\">\n<li data-start=\"2095\" data-end=\"2228\">\n<p data-start=\"2097\" data-end=\"2228\"><strong data-start=\"2097\" data-end=\"2116\">Assorbimento osmotico:<\/strong> Le particelle SAP si comportano come membrane semipermeabili, attirando acqua o fluidi corporei e gonfiandosi in un gel.<\/p>\n<\/li>\n<li data-start=\"2229\" data-end=\"2398\">\n<p data-start=\"2231\" data-end=\"2398\"><strong data-start=\"2231\" data-end=\"2249\">Alta capacit\u00e0:<\/strong> Un grammo di GELSAP\u2122 \u00e8 in grado di assorbire centinaia di grammi di acqua pura e di trattenerla con una pressione moderata, ideale per pannolini e assorbenti sotto il peso corporeo.<\/p>\n<\/li>\n<li data-start=\"2399\" data-end=\"2598\">\n<p data-start=\"2401\" data-end=\"2598\"><strong data-start=\"2401\" data-end=\"2420\">Effetti della soluzione salina:<\/strong> Nei fluidi ad alto contenuto di sale (urina, sangue), la capacit\u00e0 di assorbimento diminuisce fino a decine di grammi; le formulazioni GELSAP\u2122 sono personalizzate tramite la densit\u00e0 dei legami incrociati per bilanciare la capacit\u00e0 e la resistenza del gel.<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"2600\" data-end=\"2603\" \/>\n<h2 data-start=\"2605\" data-end=\"2641\">CARATTERISTICHE CHIAVE DELLE PRESTAZIONI<\/h2>\n<ul data-start=\"2643\" data-end=\"2916\">\n<li data-start=\"2643\" data-end=\"2677\">\n<p data-start=\"2645\" data-end=\"2677\"><strong data-start=\"2645\" data-end=\"2675\">Distribuzione dimensionale delle particelle<\/strong><\/p>\n<\/li>\n<li data-start=\"2678\" data-end=\"2718\">\n<p data-start=\"2680\" data-end=\"2718\"><strong data-start=\"2680\" data-end=\"2703\">Capacit\u00e0 di rigonfiamento libero<\/strong> (acqua pura)<\/p>\n<\/li>\n<li data-start=\"2719\" data-end=\"2781\">\n<p data-start=\"2721\" data-end=\"2781\"><strong data-start=\"2721\" data-end=\"2746\">Assorbimento sotto carico<\/strong> (ritenzione idrica sotto pressione)<\/p>\n<\/li>\n<li data-start=\"2782\" data-end=\"2814\">\n<p data-start=\"2784\" data-end=\"2814\"><strong data-start=\"2784\" data-end=\"2812\">Ritenzione e permeabilit\u00e0<\/strong><\/p>\n<\/li>\n<li data-start=\"2815\" data-end=\"2839\">\n<p data-start=\"2817\" data-end=\"2839\"><strong data-start=\"2817\" data-end=\"2837\">Tasso di acquisizione<\/strong><\/p>\n<\/li>\n<li data-start=\"2840\" data-end=\"2885\">\n<p data-start=\"2842\" data-end=\"2885\"><strong data-start=\"2842\" data-end=\"2883\">Forza del gel e resistenza alla deformazione<\/strong><\/p>\n<\/li>\n<li data-start=\"2886\" data-end=\"2916\">\n<p data-start=\"2888\" data-end=\"2916\"><strong data-start=\"2888\" data-end=\"2914\">Distribuzione e assorbimento<\/strong><\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"2918\" data-end=\"2921\" \/>\n<h2 data-start=\"2923\" data-end=\"2964\">PRINCIPALI PRODUTTORI DI SAP E CAPACIT\u00c0<\/h2>\n<div class=\"_tableContainer_80l1q_1\">\n<div class=\"_tableWrapper_80l1q_14 group flex w-fit flex-col-reverse\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"2966\" data-end=\"3757\">\n<thead data-start=\"2966\" data-end=\"3026\">\n<tr data-start=\"2966\" data-end=\"3026\">\n<th data-start=\"2966\" data-end=\"3002\" data-col-size=\"sm\">Produttore<\/th>\n<th data-start=\"3002\" data-end=\"3026\" data-col-size=\"sm\">Capacit\u00e0 (tonnellate\/anno)<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"3088\" data-end=\"3757\">\n<tr data-start=\"3088\" data-end=\"3148\">\n<td data-start=\"3088\" data-end=\"3124\" data-col-size=\"sm\">Sumitomo Seika Chemicals (Giappone)<\/td>\n<td data-col-size=\"sm\" data-start=\"3124\" data-end=\"3148\">450,000<\/td>\n<\/tr>\n<tr data-start=\"3149\" data-end=\"3209\">\n<td data-start=\"3149\" data-end=\"3185\" data-col-size=\"sm\">Nippon Shokubai (Giappone)<\/td>\n<td data-col-size=\"sm\" data-start=\"3185\" data-end=\"3209\">700,000<\/td>\n<\/tr>\n<tr data-start=\"3210\" data-end=\"3270\">\n<td data-start=\"3210\" data-end=\"3247\" data-col-size=\"sm\">Sanyo Chemical \/ SDP Global (Giappone)<\/td>\n<td data-col-size=\"sm\" data-start=\"3247\" data-end=\"3270\">420,000<\/td>\n<\/tr>\n<tr data-start=\"3271\" data-end=\"3331\">\n<td data-start=\"3271\" data-end=\"3307\" data-col-size=\"sm\">BASF (Germania)<\/td>\n<td data-col-size=\"sm\" data-start=\"3307\" data-end=\"3331\">600,000<\/td>\n<\/tr>\n<tr data-start=\"3332\" data-end=\"3392\">\n<td data-start=\"3332\" data-end=\"3368\" data-col-size=\"sm\">Evonik (Germania)<\/td>\n<td data-col-size=\"sm\" data-start=\"3368\" data-end=\"3392\">500,000<\/td>\n<\/tr>\n<tr data-start=\"3393\" data-end=\"3453\">\n<td data-start=\"3393\" data-end=\"3429\" data-col-size=\"sm\">LG Chem (Corea del Sud)<\/td>\n<td data-col-size=\"sm\" data-start=\"3429\" data-end=\"3453\">400,000<\/td>\n<\/tr>\n<tr data-start=\"3454\" data-end=\"3514\">\n<td data-start=\"3454\" data-end=\"3490\" data-col-size=\"sm\">Taiwan Plastics (Taiwan)<\/td>\n<td data-col-size=\"sm\" data-start=\"3490\" data-end=\"3514\">200,000<\/td>\n<\/tr>\n<tr data-start=\"3515\" data-end=\"3575\">\n<td data-start=\"3515\" data-end=\"3551\" data-col-size=\"sm\">Yixing Danson (Cina)<\/td>\n<td data-col-size=\"sm\" data-start=\"3551\" data-end=\"3575\">420,000<\/td>\n<\/tr>\n<tr data-start=\"3576\" data-end=\"3635\">\n<td data-start=\"3576\" data-end=\"3616\" data-col-size=\"sm\">Scienza e tecnologia satellitare (Cina)<\/td>\n<td data-start=\"3616\" data-end=\"3635\" data-col-size=\"sm\">200,000<\/td>\n<\/tr>\n<tr data-start=\"3636\" data-end=\"3696\">\n<td data-start=\"3636\" data-end=\"3672\" data-col-size=\"sm\">Gruppo Shenghong Holding (Cina)<\/td>\n<td data-col-size=\"sm\" data-start=\"3672\" data-end=\"3696\">80,000<\/td>\n<\/tr>\n<tr data-start=\"3697\" data-end=\"3757\">\n<td data-start=\"3697\" data-end=\"3733\" data-col-size=\"sm\">GELSAP (Cina)<\/td>\n<td data-col-size=\"sm\" data-start=\"3733\" data-end=\"3757\">140,000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"sticky end-(--thread-content-margin) h-0 self-end select-none\">\n<div class=\"absolute end-0 flex items-end\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<hr data-start=\"3759\" data-end=\"3762\" \/>\n<h2 data-start=\"3764\" data-end=\"3789\">APPLICAZIONI DI GELSAP<\/h2>\n<p data-start=\"3791\" data-end=\"3899\">GELSAP\u2122 sfrutta l'eccezionale gestione dei fluidi del poliacrilato di sodio per progettare nuclei assorbenti personalizzati per:<\/p>\n<ul data-start=\"3901\" data-end=\"4168\">\n<li data-start=\"3901\" data-end=\"3986\">\n<p data-start=\"3903\" data-end=\"3986\"><strong data-start=\"3903\" data-end=\"3924\">Igiene personale:<\/strong> Laminati ultrasottili che inseriscono il SAP tra gli strati di tessuto.<\/p>\n<\/li>\n<li data-start=\"3987\" data-end=\"4066\">\n<p data-start=\"3989\" data-end=\"4066\"><strong data-start=\"3989\" data-end=\"4007\">Nuclei in airlaid:<\/strong> Miscela di SAP e fibre di cellulosa per assorbenti ad alta capacit\u00e0.<\/p>\n<\/li>\n<li data-start=\"4067\" data-end=\"4168\">\n<p data-start=\"4069\" data-end=\"4168\"><strong data-start=\"4069\" data-end=\"4093\">Laminati speciali:<\/strong> Substrati in poliestere o in tessuto non tessuto con adesivo SAP.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"4170\" data-end=\"4300\">Tutte le anime GELSAP\u2122 sono prodotte in rotoli sfusi, tagliati o in fogli secondo le specifiche del cliente, in uno stabilimento certificato ISO 9001:2015.<\/p>\n<p data-start=\"4302\" data-end=\"4477\" data-is-last-node=\"\" data-is-only-node=\"\">Dai pannolini all'igiene femminile, dalle medicazioni alle confezioni mediche e al controllo delle fuoriuscite nell'industria, GELSAP\u2122 offre soluzioni SAP su misura per qualsiasi problema di gestione dei fluidi.<\/p>","protected":false},"excerpt":{"rendered":"<p>OVERVIEWSuperabsorbent Polymer (SAP), also known as Superabsorbent Material (SAM), is prized across consumer and industrial markets for its remarkable water [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3509,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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