Thermoplastic starch modification during melt processing: Hydrolysis catalyzed by carboxylic acids

被引：65

作者：

Carvalho, AJF

Zambon, MD

Curvelo, AAD

Gandini, A

机构：

[1] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

[2] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560750 Sao Carlos, SP, Brazil

来源：

CARBOHYDRATE POLYMERS | 2005年 / 62卷 / 04期

基金：

巴西圣保罗研究基金会;

关键词：

thermoplastic starch; biodegradable polymers; melt processing;

D O I：

10.1016/j.carbpol.2005.08.025

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The melt processing of glycerol-plasticized starch in the presence of non-volatile carboxylic acids resulted in a progressive loss of its molar mass, because the residual moisture in the mixture induced an acid-catalyzed hydrolysis of the ether linkages in its polysaccharide chains. The study of this reaction provided a useful means of adjusting its course and thus of preparing starch materials with controlled properties. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：387 / 390

页数：4

共 7 条

[1] Size exclusion chromatography characterization of thermoplastic starch composites 1. Influence of plasticizer and fibre content [J].