Plasticization effect of triacetin on structure and properties of starch ester film

被引：52

作者：

Zhu, Jie ^{[1
]}

Li, Xiaoxi ^{[1
]}

Huang, Chen ^{[1
]}

Chen, Ling ^{[1
]}

Li, Lin ^{[1
]}

机构：

[1] S China Univ Technol, Guangdong Prov Key Lab Green Proc Nat Prod & Prod, Minist Educ, Res Ctr Starch & Prot Proc,Coll Light Ind & Food, Guangzhou 510640, Guangdong, Peoples R China

来源：

CARBOHYDRATE POLYMERS | 2013年 / 94卷 / 02期

关键词：

Starch ester; Triacetin; Plasticizer; Interaction; Structure; Property; WAXY MAIZE STARCH; MECHANICAL-PROPERTIES; NANOCOMPOSITES; POLYMERS; GLYCEROL; MOISTURE; WATER; FOOD;

D O I：

10.1016/j.carbpol.2013.02.020

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The aim of this work was to evaluate the plasticizing effect of triacetin on the structure and properties of starch ester film and further establish the structure-property relationships. The presence of triacetin resulted in multiple structure changes of the film. The mobility of macromolecular chain was increased to form scattered crystallite during the film formation process. The amorphous region was enlarged to contain more triacetin squeezed from crystalline region. The plasticization of triacetin and restriction of crystallite oppositely influenced the mobility of macromolecular chains in different regions. The thermal stability of triacetin changed along with its fluctuant interaction with macromolecules. Comparatively, the enhanced ether bond and the restriction from crystalline regions on the mobility of the amorphous chain consequently improved the thermal stability of the film matrix. The interaction between triacetin and starch ester was essential to film forming but unexpectedly lowered the triacetin stability. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：874 / 881

页数：8

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