{"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":"quest-ce-que-lalcool-polyvinylique","status":"publish","type":"post","link":"https:\/\/www.seedchemever.com\/fr\/what-is-polyvinyl-alcohol\/","title":{"rendered":"Qu'est-ce que l'alcool polyvinylique (PVA) ?"},"content":{"rendered":"<p class=\"wp-block-paragraph\">L'alcool polyvinylique (PVA) est un polym\u00e8re soluble dans l'eau, pr\u00e9par\u00e9 par l'alcoolisation de l'ac\u00e9tate de polyvinyle. Il est inodore, insipide et se pr\u00e9sente sous la forme d'une poudre ou d'un granul\u00e9 blanc.<\/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\">Il poss\u00e8de d'excellentes propri\u00e9t\u00e9s de solubilit\u00e9 dans l'eau, de formation de film, d'adh\u00e9rence et de r\u00e9sistance \u00e0 l'huile, ainsi qu'une bonne biocompatibilit\u00e9. Il est donc largement utilis\u00e9 dans des secteurs tels que l'industrie, la construction, le textile, les produits chimiques quotidiens et la m\u00e9decine. Dans les applications industrielles, les mod\u00e8les PVA sont g\u00e9n\u00e9ralement class\u00e9s en fonction du degr\u00e9 de polym\u00e9risation et du degr\u00e9 d'alcoolisation. La s\u00e9rie avec un degr\u00e9 d'alcoolisation de 88% est soluble dans l'eau \u00e0 temp\u00e9rature ambiante, tandis que la s\u00e9rie avec un degr\u00e9 d'alcoolisation de 99% doit \u00eatre dissoute dans de l'eau chaude \u00e0 haute temp\u00e9rature. Les diff\u00e9rents mod\u00e8les conviennent \u00e0 divers sc\u00e9narios, notamment les adh\u00e9sifs, l'encollage des textiles, les additifs pour mortier et les membranes m\u00e9dicales.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les grades de PVA SEED les plus courants sont 0588, 1788, 1799 et 2488. Les applications diff\u00e8rent en fonction du degr\u00e9 de polym\u00e9risation.<\/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\">En g\u00e9n\u00e9ral, on choisit une maille de 80.<\/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\/fr\/quest-ce-que-lalcool-polyvinylique\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\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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It is odorless, tasteless, [&hellip;]","_links":{"self":[{"href":"https:\/\/www.seedchemever.com\/fr\/wp-json\/wp\/v2\/posts\/2733","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.seedchemever.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.seedchemever.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.seedchemever.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.seedchemever.com\/fr\/wp-json\/wp\/v2\/comments?post=2733"}],"version-history":[{"count":1,"href":"https:\/\/www.seedchemever.com\/fr\/wp-json\/wp\/v2\/posts\/2733\/revisions"}],"predecessor-version":[{"id":2736,"href":"https:\/\/www.seedchemever.com\/fr\/wp-json\/wp\/v2\/posts\/2733\/revisions\/2736"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.seedchemever.com\/fr\/wp-json\/wp\/v2\/media\/2734"}],"wp:attachment":[{"href":"https:\/\/www.seedchemever.com\/fr\/wp-json\/wp\/v2\/media?parent=2733"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.seedchemever.com\/fr\/wp-json\/wp\/v2\/categories?post=2733"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.seedchemever.com\/fr\/wp-json\/wp\/v2\/tags?post=2733"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}