{"id":5621,"date":"2025-11-21T09:24:05","date_gmt":"2025-11-21T10:24:05","guid":{"rendered":"https:\/\/www.nanoparmin.com\/?p=5621"},"modified":"2025-12-05T07:24:47","modified_gmt":"2025-12-05T08:24:47","slug":"hydrotalcite-pvc-thermal-stabilizer","status":"publish","type":"post","link":"https:\/\/www.nanoparmin.com\/en\/2025\/11\/21\/hydrotalcite-pvc-thermal-stabilizer\/","title":{"rendered":"The Effect of Hydrotalcite on the Thermal Stabilization of PVC"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"5621\" class=\"elementor elementor-5621 elementor-5620\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e6dace6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e6dace6\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6178a00\" data-id=\"6178a00\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3772a65 elementor-widget elementor-widget-heading\" data-id=\"3772a65\" data-element_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\">The Effect of Hydrotalcite on the Thermal Stabilization of PVC<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2cb4ba1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2cb4ba1\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-ff37f81\" data-id=\"ff37f81\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e17f9ed elementor-widget elementor-widget-text-editor\" data-id=\"e17f9ed\" data-element_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 style=\"text-align: justify;\">Polyvinyl chloride (PVC) is one of the most widely used plastics in the world. Thanks to its low cost, flame resistance, mechanical strength, and chemical durability, it is used in pipes, cables, construction materials, packaging, and many other applications. However, the presence of C\u2013Cl bonds in the chain and structural defects such as allylic chlorides and tertiary chlorides make PVC highly unstable when exposed to heat.<\/p><p style=\"text-align: justify;\">PVC begins to undergo dehydrochlorination at relatively low temperatures (around 100 \u00b0C). As HCl is released and conjugated polyene chains form, the material undergoes discoloration, a drop in molecular weight, and deterioration of mechanical properties. The released HCl also autocatalyzes further degradation, triggering a \u201czipper-like\u201d chain-decomposition reaction.<\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7fa2452 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7fa2452\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2160da5\" data-id=\"2160da5\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1f4ef8b elementor-widget elementor-widget-image\" data-id=\"1f4ef8b\" data-element_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=\"1024\" height=\"683\" src=\"https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/PVC-degradation-1024x683.png\" class=\"attachment-large size-large wp-image-5624\" alt=\"PVC degradation\n\u062a\u062e\u0631\u06cc\u0628 \u062d\u0631\u0627\u0631\u062a\u06cc PVC\" srcset=\"https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/PVC-degradation-1024x683.png 1024w, https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/PVC-degradation-300x200.png 300w, https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/PVC-degradation-768x512.png 768w, https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/PVC-degradation-600x400.png 600w, https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/PVC-degradation.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\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\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-07508fa elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"07508fa\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-ea74e38\" data-id=\"ea74e38\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0088dea elementor-widget elementor-widget-text-editor\" data-id=\"0088dea\" data-element_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 style=\"text-align: justify;\">Since industrial processing of PVC typically occurs at 160\u2013210 \u00b0C, the use of thermal stabilizers to prevent degradation is unavoidable.<\/p>\n<p style=\"text-align: justify;\">Traditional stabilizers include lead salts, organotin compounds, and metal soaps. Although lead-based stabilizers offered excellent performance, they have been prohibited in many countries because of their severe toxicity. Calcium\u2013zinc (Ca\/Zn) systems are safer and appropriate alternatives, but they generally require co-stabilizers to achieve desirable performance.<\/p>\n<p style=\"text-align: justify;\">Among these,&nbsp;<a href=\"https:\/\/en.wikipedia.org\/wiki\/Hydrotalcite\" target=\"_blank\">hydrotalcite<\/a>&nbsp;has attracted significant attention as a modern, environmentally friendly, and highly effective stabilizer. Its layered structure and basic nature enable it to absorb and neutralize the HCl released from PVC.<\/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-41bf6ba elementor-widget elementor-widget-spacer\" data-id=\"41bf6ba\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2c8ca00 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2c8ca00\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d741399\" data-id=\"d741399\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2b850d7 elementor-widget elementor-widget-heading\" data-id=\"2b850d7\" data-element_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\">Structure and Properties of Hydrotalcite<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-ecfaf7b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ecfaf7b\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-28415b6\" data-id=\"28415b6\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e838ea9 elementor-widget elementor-widget-text-editor\" data-id=\"e838ea9\" data-element_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 style=\"text-align: justify;\">Hydrotalcite, with the general chemical formula Mg\u2086Al\u2082(OH)\u2081\u2086CO\u2083\u00b74H\u2082O, is an inorganic anionic nanoclay belonging to the family of layered double hydroxides (LDH). Its structure is composed of positively charged hydroxide layers, separated by interlayer anions and water molecules. In fact, this structure is derived from brucite, Mg(OH)\u2082, but part of the Mg\u00b2\u207a ions are replaced by Al\u00b3\u207a ions, and this substitution generates a net positive charge on the layer. This charge must then be balanced by interlayer anions such as carbonate, chloride, or nitrate.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-cb585db elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"cb585db\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-f82f737\" data-id=\"f82f737\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9e4ea9f elementor-widget elementor-widget-image\" data-id=\"9e4ea9f\" data-element_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 decoding=\"async\" width=\"1024\" height=\"617\" src=\"https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/Hydrotalcite-structure-1024x617.png\" class=\"attachment-large size-large wp-image-5631\" alt=\"Hydrotalcite structure\n\u0633\u0627\u062e\u062a\u0627\u0631 \u0647\u06cc\u062f\u0631\u0648\u062a\u0627\u0644\u0633\u06cc\u062a\" srcset=\"https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/Hydrotalcite-structure-1024x617.png 1024w, https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/Hydrotalcite-structure-300x181.png 300w, https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/Hydrotalcite-structure-768x463.png 768w, https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/Hydrotalcite-structure-1536x926.png 1536w, https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/Hydrotalcite-structure-2048x1234.png 2048w, https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/Hydrotalcite-structure-600x362.png 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\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\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-081da6e\" data-id=\"081da6e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a2ce644 elementor-widget elementor-widget-image\" data-id=\"a2ce644\" data-element_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 decoding=\"async\" width=\"1024\" height=\"488\" src=\"https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/Hydrotalcite-powder-1-1024x488.png\" class=\"attachment-large size-large wp-image-5643\" alt=\"Hydrotalcite powder\n\u067e\u0648\u062f\u0631 \u0647\u06cc\u062f\u0631\u0648\u062a\u0627\u0644\u0633\u06cc\u062a\" srcset=\"https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/Hydrotalcite-powder-1-1024x488.png 1024w, https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/Hydrotalcite-powder-1-300x143.png 300w, https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/Hydrotalcite-powder-1-768x366.png 768w, https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/Hydrotalcite-powder-1-600x286.png 600w, https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/Hydrotalcite-powder-1.png 1452w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\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\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-4c64a75 elementor-widget elementor-widget-text-editor\" data-id=\"4c64a75\" data-element_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><strong>Hydrotalcite structure<\/strong><\/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-fe5b94d elementor-widget elementor-widget-text-editor\" data-id=\"fe5b94d\" data-element_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>Hydrotalcite is capable of effectively absorbing HCl because it contains:<\/p><ul><li>positively charged layers<\/li><li>exchangeable interlayer anions<\/li><li>strong basicity<\/li><li>a layered structure with high active surface area<\/li><\/ul><p>This feature is the key reason for its functionality in PVC thermal stabilization.<\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f634669 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f634669\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-14b2567\" data-id=\"14b2567\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ab254cd elementor-widget elementor-widget-spacer\" data-id=\"ab254cd\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4df1ec9 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4df1ec9\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-b50ed64\" data-id=\"b50ed64\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0edd9b0 elementor-widget elementor-widget-heading\" data-id=\"0edd9b0\" data-element_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\">Mechanism of PVC Thermal Stabilization by Hydrotalcite<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f0ea836 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f0ea836\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5b1d40b\" data-id=\"5b1d40b\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-03e43bd elementor-widget elementor-widget-text-editor\" data-id=\"03e43bd\" data-element_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 style=\"text-align: justify;\">The stabilizing effect of hydrotalcite in PVC mainly results from two key processes:<\/p><p>\u00a0<\/p><p><strong>1- HCl Adsorption and Ion Exchange<\/strong><\/p><p style=\"text-align: justify;\">When PVC decomposes and releases HCl, chloride ions (Cl\u207b) enter the interlayer galleries of the LDH and replace the original anions such as carbonate. This ion-exchange process traps HCl and prevents it from returning to the polymer phase.<\/p><p>\u00a0<\/p><p style=\"text-align: justify;\"><strong>2- Neutralization of HCl by OH Groups<\/strong><\/p><p style=\"text-align: justify;\">When a large number of Cl\u207b ions and H\u207a protons accumulate within the hydrotalcite structure, the hydroxyl groups (OH\u207b) and the metal cations present in the layers begin to react with HCl. This leads to the neutralization of HCl and the formation of water and metal chlorides (such as MgCl\u2082 and AlCl\u2083). The consumption of HCl by hydrotalcite prevents it from diffusing into the polymer and catalyzing the dehydrochlorination process of PVC.<\/p><p style=\"text-align: justify;\">Ultimately, during these reactions, the hydrotalcite structure collapses, and its layers are converted into a mixture of metal chlorides. In general, hydrotalcite acts like an alkaline sponge, capturing and neutralizing HCl at the moment it is formed.<\/p><p>\u00a0<\/p><p style=\"text-align: justify;\"><strong>Secondary Effect: Reduced Activation of Labile Chlorides in PVC<\/strong><\/p><p style=\"text-align: justify;\">Some studies report that the positively charged LDH layers can reduce the electron density on PVC\u2019s chlorine atoms, lowering the probability of their removal. Although this effect is secondary, it helps reduce the rate of yellowing.<\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-98a98ab elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"98a98ab\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4971e63\" data-id=\"4971e63\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-533bba1 elementor-widget elementor-widget-spacer\" data-id=\"533bba1\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f1968e2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f1968e2\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-14609c5\" data-id=\"14609c5\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-32600ae elementor-widget elementor-widget-heading\" data-id=\"32600ae\" data-element_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\">Comparison of Hydrotalcite with Other Stabilizers<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-9ee61d9 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9ee61d9\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-64ad731\" data-id=\"64ad731\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-09e6db3 elementor-widget elementor-widget-text-editor\" data-id=\"09e6db3\" data-element_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 style=\"text-align: justify;\">The table below summarizes the strengths and weaknesses of the conventional stabilizers used in PVC. Based on this, lead salts\u2014despite their high effectiveness\u2014are no longer desirable options due to the serious health risks they pose (lead poisoning, organ damage). Calcium\u2013zinc stabilizers are now recognized as the industrial standard for rigid PVC. Although these compounds are much safer, they do not act as \u201cintelligently\u201d as hydrotalcite. They typically require organic co-stabilizers (such as \u03b2-diketones, epoxides, etc.) to achieve full thermal stability and proper color control. Organotin-based stabilizers (such as dibutyltin dilaurate) provide very strong stabilization and are widely used in flexible PVC, but their toxicity\u2014especially to the nervous system\u2014is a significant drawback.<\/p><p style=\"text-align: justify;\">In contrast, hydrotalcite-based stabilizers are considered completely safe from an environmental standpoint. Hydrotalcite is essentially a non-toxic material (even used as an antacid in pharmaceuticals) and contains no heavy metals in its chemical structure. In fact, adding hydrotalcite to calcium\u2013zinc stabilizer systems can significantly improve their performance. For example, hydrotalcite-based fillers have been shown to enhance the thermal stability and weathering resistance of PVC\/Ca\u2013Zn formulations without negatively affecting product color. Therefore, in terms of environmental compatibility, long-term performance, and safety, hydrotalcite offers substantial advantages over many older stabilizer systems.<\/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-df5997a elementor-widget elementor-widget-text-editor\" data-id=\"df5997a\" data-element_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<article class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [&amp;:has([data-writing-block])&gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" tabindex=\"-1\" data-turn-id=\"request-691cd5ff-9628-8333-a8a7-dc505eebb3c1-3\" data-testid=\"conversation-turn-33\" data-scroll-anchor=\"true\" data-turn=\"assistant\"><div class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:--spacing(4)] @w-sm\/main:[--thread-content-margin:--spacing(6)] @w-lg\/main:[--thread-content-margin:--spacing(16)] px-(--thread-content-margin)\"><div class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" tabindex=\"-1\"><div class=\"flex max-w-full flex-col grow\"><div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+&amp;]:mt-1\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"bceec7ca-d9ef-406a-9934-97a37b198d4f\" data-message-model-slug=\"gpt-5-1\"><div class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[1px]\"><div class=\"markdown prose dark:prose-invert w-full break-words light markdown-new-styling\"><p data-start=\"51\" data-end=\"115\" data-is-last-node=\"\" data-is-only-node=\"\"><strong>Performance comparison of common PVC stabilizers<\/strong><\/p><\/div><\/div><\/div><\/div><\/div><\/div><\/article>\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-7d8cef3 elementor-widget elementor-widget-image\" data-id=\"7d8cef3\" data-element_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 loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"198\" src=\"https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/PVC-stabilizers-EN-1024x198.jpg\" class=\"attachment-large size-large wp-image-5726\" alt=\"PVC stabilizers comparison\" srcset=\"https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/PVC-stabilizers-EN-1024x198.jpg 1024w, https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/PVC-stabilizers-EN-300x58.jpg 300w, https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/PVC-stabilizers-EN-768x148.jpg 768w, https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/PVC-stabilizers-EN-1536x297.jpg 1536w, https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/PVC-stabilizers-EN-600x116.jpg 600w, https:\/\/www.nanoparmin.com\/wp-content\/uploads\/2025\/11\/PVC-stabilizers-EN.jpg 1849w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\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\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-efa58ed elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"efa58ed\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-042f012\" data-id=\"042f012\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-99c72ae elementor-widget elementor-widget-spacer\" data-id=\"99c72ae\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-93e8ac4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"93e8ac4\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-91c601a\" data-id=\"91c601a\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-77ad453 elementor-widget elementor-widget-heading\" data-id=\"77ad453\" data-element_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\">Conclusion<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e42addc elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e42addc\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-cca311b\" data-id=\"cca311b\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9777510 elementor-widget elementor-widget-text-editor\" data-id=\"9777510\" data-element_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 style=\"text-align: justify;\">Hydrotalcite and other LDH materials represent a new generation of PVC thermal stabilizers that function based on their layered structure and basic nature. These materials can:<\/p><ul style=\"text-align: justify;\"><li>capture and neutralize HCl on the spot<\/li><li>suppress the chain-degradation reactions of PVC<\/li><li>prevent polyene formation and discoloration<\/li><li>enhance the performance of Ca\/Zn systems<\/li><li>operate without the environmental risks of lead and organotin stabilizers<\/li><\/ul><p style=\"text-align: justify;\">For these reasons, hydrotalcite is a green, safe, cost-effective, and highly efficient option for the PVC industry, and it is expected to play a growing role in future formulations.<\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-bb03078 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"bb03078\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-aa096b6\" data-id=\"aa096b6\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-bcd1af4 elementor-widget elementor-widget-spacer\" data-id=\"bcd1af4\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d055ccf elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d055ccf\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3f8caf6\" data-id=\"3f8caf6\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7d9105f elementor-widget elementor-widget-heading\" data-id=\"7d9105f\" data-element_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\">References<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b955cd2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b955cd2\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8065f47\" data-id=\"8065f47\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-977cb08 elementor-widget elementor-widget-text-editor\" data-id=\"977cb08\" data-element_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<ol><li style=\"text-align: justify;\"><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0169131721002222\">Guo, Y., et al. \u201cLayered Double Hydroxides as Thermal Stabilizers for Poly(vinyl chloride): A Review.\u201d Progress in Polymer Science, 2018.<\/a><\/li><li style=\"text-align: justify;\">Wilkes, C.E., Summers, J.W., Daniels, C.A. PVC Handbook, 2nd ed., Hanser Publishers, 2005.<\/li><li style=\"text-align: justify;\"><a href=\"https:\/\/en.reach24h.com\/news\/industry-news\/chemical\/eu-reach-regulations-impose-restrictions-on-lead-usage-in-pvc\">European Chemicals Agency (ECHA). \u201cRestrictions on Lead Compounds in Plastics.\u201d Regulatory Report, 2023.<\/a><\/li><li style=\"text-align: justify;\"><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0141391013001031\">Gilbert, M. , et al. \u201cAssessment of PVC stabilisation using hydrotalcites \u2013 Raman spectroscopy and other techniques\u201c Polymer Degradation and Stability, 2013.<\/a><\/li><li style=\"text-align: justify;\"><a href=\"https:\/\/www.tandfonline.com\/doi\/abs\/10.1081\/dmr-200033490\">Appel , K.E. \u201cOrganotin compounds: toxicokinetic aspects\u201c Drug Metabolism Reviews, 2004.<\/a><\/li><\/ol>\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Duis ornare, est at mollis for libero mollis orci vitae dictum lacus quis neque lectus vel neque.<\/p>\n","protected":false},"author":1,"featured_media":5624,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1561,1562,1560],"tags":[],"class_list":["post-5621","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-hub-en","category--en","category-1560"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Hydrotalcite PVC<\/title>\n<meta name=\"description\" content=\"This study investigates the effect of Hydrotalcite nanoclay on the thermal stabilization of polyvinyl chloride (PVC).\" \/>\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.nanoparmin.com\/en\/2025\/11\/21\/hydrotalcite-pvc-thermal-stabilizer\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hydrotalcite PVC\" \/>\n<meta property=\"og:description\" content=\"This study investigates the effect of Hydrotalcite nanoclay on the thermal stabilization of polyvinyl chloride (PVC).\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.nanoparmin.com\/en\/2025\/11\/21\/hydrotalcite-pvc-thermal-stabilizer\/\" \/>\n<meta property=\"og:site_name\" content=\"Nano Parmin Khavaran Co.\" \/>\n<meta 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