Inorganic matter modified water-based copolymer prepared by chitosan-starch-CMC-Na-PVAL as an environment-friendly coating material

Yanyu Han; Songling Chen; Ming Yang; Hongtao Zou; Yulong Zhang

doi:10.1016/j.carbpol.2020.115925

Inorganic matter modified water-based copolymer prepared by chitosan-starch-CMC-Na-PVAL as an environment-friendly coating material

Carbohydr Polym. 2020 Apr 15:234:115925. doi: 10.1016/j.carbpol.2020.115925. Epub 2020 Jan 27.

Authors

Yanyu Han¹, Songling Chen¹, Ming Yang¹, Hongtao Zou², Yulong Zhang¹

Affiliations

¹ College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, Liaoning, China; National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Shenyang 110866, Liaoning, China; Key Laboratory of Arable Land Conservation (Northeast China), Ministry of Agriculture, Shenyang 110866, Liaoning, China.
² College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, Liaoning, China; National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Shenyang 110866, Liaoning, China; Key Laboratory of Arable Land Conservation (Northeast China), Ministry of Agriculture, Shenyang 110866, Liaoning, China. Electronic address: hongtaozou208@126.com.

PMID: 32070543
DOI: 10.1016/j.carbpol.2020.115925

Abstract

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.

Keywords: Chitosan; Composite films; Glacial acetic acid; Glutaraldehyde; Glycerol; Inorganic matter; Polyvinyl alcohol; Sodium carboxymethyl cellulose; Starch soluble; Water-based copolymer.