{"id":2733,"date":"2026-02-06T08:17:01","date_gmt":"2026-02-06T08:17:01","guid":{"rendered":"https:\/\/www.seedchemever.com\/?p=2733"},"modified":"2026-02-06T08:17:04","modified_gmt":"2026-02-06T08:17:04","slug":"che-cose-lalcol-polivinilico","status":"publish","type":"post","link":"https:\/\/www.seedchemever.com\/it\/what-is-polyvinyl-alcohol\/","title":{"rendered":"Che cos'\u00e8 l'alcol polivinilico (PVA)?"},"content":{"rendered":"<p class=\"wp-block-paragraph\">L'alcool polivinilico (PVA) \u00e8 un polimero solubile in acqua, preparato dall'alcolisi dell'acetato di polivinile. \u00c8 inodore, insapore e si presenta come polvere o granulo bianco.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"800\" height=\"600\" data-src=\"https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/02\/what-is-polyvinyl-alcohol.jpg\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"\" class=\"wp-image-2734 lazyload\"\/><noscript><img decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/02\/what-is-polyvinyl-alcohol.jpg\" alt=\"\" class=\"wp-image-2734\" srcset=\"https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/02\/what-is-polyvinyl-alcohol.jpg 800w, https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/02\/what-is-polyvinyl-alcohol-300x225.jpg 300w, https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/02\/what-is-polyvinyl-alcohol-768x576.jpg 768w, https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/02\/what-is-polyvinyl-alcohol-16x12.jpg 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/noscript><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Ha un'eccellente solubilit\u00e0 in acqua, propriet\u00e0 filmogene, adesione e resistenza all'olio, oltre a una buona biocompatibilit\u00e0, per cui \u00e8 ampiamente utilizzato in settori quali l'industria, l'edilizia, il tessile, la chimica quotidiana e la medicina. Nelle applicazioni industriali, i modelli di PVA sono solitamente classificati in base al grado di polimerizzazione e al grado di alcolizzazione. La serie con grado di alcolisi 88% \u00e8 solubile in acqua a temperatura ambiente, mentre la serie con grado di alcolisi 99% richiede la dissoluzione in acqua calda ad alta temperatura. I diversi modelli sono adatti a vari scenari, tra cui adesivi, appretto tessile, additivi per malte e materiali per membrane mediche.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I gradi di PVA SEED pi\u00f9 comuni sono 0588, 1788, 1799 e 2488. Le applicazioni variano a seconda del grado di polimerizzazione.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"800\" height=\"600\" data-src=\"https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/02\/seed-polyvinyl-alcohol.jpg\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"\" class=\"wp-image-2735 lazyload\"\/><noscript><img decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/02\/seed-polyvinyl-alcohol.jpg\" alt=\"\" class=\"wp-image-2735\" srcset=\"https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/02\/seed-polyvinyl-alcohol.jpg 800w, https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/02\/seed-polyvinyl-alcohol-300x225.jpg 300w, https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/02\/seed-polyvinyl-alcohol-768x576.jpg 768w, https:\/\/www.seedchemever.com\/wp-content\/uploads\/2026\/02\/seed-polyvinyl-alcohol-16x12.jpg 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/noscript><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">In mortar and putty, the common grade is 2488. When purchasing PVA, it&#8217;s important to consult with SEED sales personnel about the mesh size. Grades like 160 mesh and 120 mesh are suitable for mortar, putty, applying mortar, roughening, and even making adhesives. These higher mesh grades are more expensive.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In genere si sceglie una maglia di 80 mesh.<\/p>","protected":false},"excerpt":{"rendered":"<p>Polyvinyl alcohol (PVA) is a water-soluble polymer, which is prepared by the alcoholysis of polyvinyl acetate. It is odorless, tasteless, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2734,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","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":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_themeisle_gutenberg_block_has_review":false,"footnotes":"","_members_access_role":[],"_members_access_error":""},"categories":[1],"tags":[],"class_list":["post-2733","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is polyvinyl alcohol (PVA)? - SEED<\/title>\n<meta name=\"description\" content=\"Polyvinyl alcohol (PVA) is a water-soluble polymer obtained from the alcoholysis of polyvinyl acetate. It is odorless and tasteless, appearing as a white powder or granules.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.seedchemever.com\/it\/che-cose-lalcol-polivinilico\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is polyvinyl alcohol (PVA)? - SEED\" \/>\n<meta property=\"og:description\" content=\"Polyvinyl alcohol (PVA) is a water-soluble polymer obtained from the alcoholysis of polyvinyl acetate. 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