Inorganic matter modifications were used to improve the hydrophobic properties and slow-release effects of water-based copolymer films. Water-based copolymers were prepared by aqueous polymerization of polyvinyl alcohol, starch, chitosan, and sodium carboxymethyl cellulose, and then, zeolite powder, volcanic ash or biochar were added to prepare the inorganic matter modified water-based copolymer films. The results showed that the inorganic matter modified water-based copolymer films had enhanced thermal stability, reductions in O-H and water vapour permeability, and increased crystallinity and roughness. Compared with water-based copolymer films, the water absorption capacities of the zeolite powder modified water-based copolymer films, volcanic ash modified water-based copolymer films, and biochar modified water-based copolymer films were reduced by 42.8 %, 50.0 % and 39.0 %, and their ammonium permeability was reduced by 53.0 %, 12.1 % and 1.1 %, respectively. Inorganic matter modified water-based copolymer films have properties that make them suitable for use in preparing slow-release coating materials.

中文翻译：

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通过壳聚糖-淀粉-CMC-Na-PVAL制备的无机物改性水基共聚物作为环保涂料。

无机物改性用于改善水基共聚物薄膜的疏水性和缓释效果。通过聚乙烯醇，淀粉，壳聚糖和羧甲基纤维素钠的水聚合来制备水基共聚物，然后，添加沸石粉，火山灰或生物炭以制备无机物改性的水基共聚物膜。结果表明，无机物改性的水基共聚物膜具有增强的热稳定性，降低的OH和水蒸气渗透性以及增加的结晶度和粗糙度。与水基共聚物膜相比，沸石粉改性水基共聚物膜，火山灰改性水基共聚物膜的吸水能力，生物膜和生物炭改性的水基共聚物膜分别降低了42.8％，50.0％和39.0％，其氨渗透性分别降低了53.0％，12.1％和1.1％。无机物改性的水基共聚物薄膜具有使其适合用于制备缓释涂料的性能。