Preparation of mechanical activated starch acetate and performance research of the biodegradable plastic films

被引：0

作者：

Chen Y. ^{[1
]}

Huang Z. ^{[2
]}

Xie Z. ^{[1
]}

Zhu W. ^{[1
]}

Wu N. ^{[1
]}

机构：

[1] Department of Chemistry and Biology, Yulin Normal University

[2] School of Chemistry and Chemical Engineering, Guangxi University

来源：

Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | 2011年 / 27卷 / 05期

关键词：

Biodegradable plastic films; Biodegradation; Degree of substitution; Mechanical activate; Starch; Structure properties;

D O I：

10.3969/j.issn.1002-6819.2011.05.053

中图分类号：

学科分类号：

摘要：

In order to improve properties of starch-based biodegradable plastic films, the mechanical activated starch acetate (MASA) was synthesized from mechanical activated maize starch (MAS) with activation time for 1.0 h. At the same time, the biodegradable plastic films were produced by thermal gelatinization of starch suspensions blending MASA with degree of substitution and polyvinyl alcohol (PVA). By Fourier transform infrared spectrogram (FTIR), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM), the microstructure, particle shape, thermal stability were studied. The mechanical properties and biodegrade ability of the MASA/PVA were investigated by comparing with those of native starch acetate (SA). The results indicated that the microstructure and particle shape changed greatly and thermal property of MASA increased compared with those of MAS and native starch. The properties of MASA/PVA were better than those of SA/PVA, and the tensile strength of the MASA/PVA with MASA (DS=0.1) was 3.56 MPa, the breaking elongation was 146.22% before soaking in water, and the absorption of water was 134.79% after 24 h. Hot water resistance properties was good, and the rate of biodegradation was 45.90% in the soil after 20 days. The mechanical activation pretreatment effectively improved the properties of biodegradable plastic films.

引用

页码：298 / 304

页数：6

共 19 条

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