Controlled-release urea encapsulated by ethyl cellulose/butyl acrylate/vinyl acetate hybrid latex

被引：10

作者：

Li, Yue ^{[1
]}

Zhen, Da ^{[2
]}

Liao, Shuijiao ^{[1
]}

Zhu, Duanwei ^{[3
]}

Yang, Xun ^{[1
]}

机构：

[1] Huazhong Agr Univ, Coll Basic Sci, Wuhan 430070, Hubei, Peoples R China

[2] Hubei Univ Technol, Coll Bioengn, Wuhan 430068, Hubei, Peoples R China

[3] Huazhong Agr Univ, Lab Plant Nutr & Ecol Environm Res, Ctr Microelement Res, Wuhan 430070, Hubei, Peoples R China

来源：

POLISH JOURNAL OF CHEMICAL TECHNOLOGY | 2018年 / 20卷 / 04期

基金：

国家重点研发计划;

关键词：

coated urea; ethyl cellulose/butyl acrylate/vinyl acetate; hybrid latex; emulsion polymerization; controlled-release ability; GRAFTING COPOLYMER; STARCH; ETHYLCELLULOSE; FERTILIZERS;

D O I：

10.2478/pjct-2018-0062

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Fertilizer encapsulation through polymer membranes can reduce fertilizer losses and minimize environmental pollution. In this paper, an emulsion of ethyl cellulose (EC)/vinyl acetate (VAc)/butyl acrylate (BA) was successfully prepared by pre-emulsified semi-continuous seed emulsion polymerization. EC/BA/VAc films showed biodegradability. The influence of the EC content on the properties of EC/BA/VAc films was also investigated by DSC, a water absorbency analysis, etc. Controlled-release urea encapsulated by EC/BA/VAc latex was prepared in a film coating machine and conformed to the standards for slow-release fertilizers of the Committee of European Normalization. The release of urea from controlled-release urea encapsulated by EC/BA/VAc latex containing 0%, 5%, 10%, and 15% EC was 75.1%, 65.8%, 70.1% and 84.1%, respectively, after 42 days, and controlled-release urea encapsulated by EC/BA/VAc latex (5% EC) had the best controlled-release ability. Therefore, controlled-release urea encapsulated by EC/BA/VAc latex has many potential applications in agricultural industry.

引用

页码：108 / 112

页数：5

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