{"id":4302,"date":"2026-05-08T11:29:27","date_gmt":"2026-05-08T03:29:27","guid":{"rendered":"https:\/\/www.jmchemi.com\/?p=4302"},"modified":"2026-05-08T11:29:27","modified_gmt":"2026-05-08T03:29:27","slug":"application-of-anionic-pam-in-papermaking","status":"publish","type":"post","link":"https:\/\/www.jmchemi.com\/pt\/application-of-anionic-pam-in-papermaking\/","title":{"rendered":"Application of Anionic PAM in Papermaking"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Anionic polyacrylamide (APAM) is widely used in papermaking, mainly for retention aid, drainage aid, strength improvement, white water recovery and sludge dewatering, suitable for neutral\/alkaline systems.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1. Core Functions<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Retention Aid: Increases retention rate by 20\u201330%, saves 20\u201330kg pulp per ton, reduces white water turbidity.<\/li>\n\n\n\n<li>Drainage Aid: Accelerates dewatering by over 30%, increases machine speed and reduces drying energy consumption.<\/li>\n\n\n\n<li>Dry Strength Agent: Improves tensile, burst and tear strength by 10\u201320%, enhances printability.<\/li>\n\n\n\n<li>Formation Improver: Optimizes fiber dispersion and paper smoothness.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">2. Surface Sizing &amp; Specialty Paper<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Compound with starch as surface sizing agent for newsprint\/coated paper; applied in food\/tea packaging paper to meet hygiene and strength requirements.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3. White Water &amp; Wastewater Treatment<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Medium-molecular-weight APAM (6\u20138 million) recovers over 90% fine fibers from white water; combined with PAC for sludge dewatering.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">4. Key Parameters<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>pH: 6.5\u20139.0 (neutral to alkaline)<\/li>\n\n\n\n<li>Molecular weight: 8\u201312 million (retention\/drainage); 3\u20136 million (strength\/sizing)<\/li>\n\n\n\n<li>Dosage: 0.05\u20130.2% (based on oven-dry pulp); 2\u20135mg\/L (wastewater, with PAC)<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">5. Notes &amp; Difference<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Avoid mixing with cationic additives; control dissolving temperature (\u226460\u2103) and stirring speed (\u2264200rpm). Unlike cationic PAM (for acidic\/neutral systems, COD removal), APAM is for neutral\/alkaline systems, focusing on retention, drainage and strength.<\/p>","protected":false},"excerpt":{"rendered":"<p>Anionic polyacrylamide (APAM) is widely used in papermaking, mainly for retention aid, drainage aid, strength improvement, white water recovery and sludge dewatering, suitable for neutral\/alkaline systems. 1. Core Functions 2. Surface Sizing &amp; Specialty Paper Compound with starch as surface sizing agent for newsprint\/coated paper; applied in food\/tea [&hellip;]<\/p>","protected":false},"author":1,"featured_media":4303,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","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":"","ast-disable-related-posts":"","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-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":"","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-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":"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":""},"mobile":{"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":""}},"footnotes":""},"categories":[56],"tags":[],"class_list":["post-4302","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-resources"],"_links":{"self":[{"href":"https:\/\/www.jmchemi.com\/pt\/wp-json\/wp\/v2\/posts\/4302","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jmchemi.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jmchemi.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jmchemi.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jmchemi.com\/pt\/wp-json\/wp\/v2\/comments?post=4302"}],"version-history":[{"count":1,"href":"https:\/\/www.jmchemi.com\/pt\/wp-json\/wp\/v2\/posts\/4302\/revisions"}],"predecessor-version":[{"id":4304,"href":"https:\/\/www.jmchemi.com\/pt\/wp-json\/wp\/v2\/posts\/4302\/revisions\/4304"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jmchemi.com\/pt\/wp-json\/wp\/v2\/media\/4303"}],"wp:attachment":[{"href":"https:\/\/www.jmchemi.com\/pt\/wp-json\/wp\/v2\/media?parent=4302"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jmchemi.com\/pt\/wp-json\/wp\/v2\/categories?post=4302"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jmchemi.com\/pt\/wp-json\/wp\/v2\/tags?post=4302"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}