Thermal analysis of glycerol citrate/starch blends

被引：23

作者：

Holser, Ronald Alan ^{[1
]}

机构：

[1] USDA ARS, Natl Ctr Agr Utilizat Res, Peoria, IL 61604 USA

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2008年 / 110卷 / 03期

关键词：

glycerol; citric acid; cornstarch; polyesters; DSC;

D O I：

10.1002/app.27651

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The reaction of glycerol and citric acid was studied by differential scanning calorimetry (DSC) and thermal gravimetric analysis. Reactions were performed in the DSC with a temperature oscillation of 1 degrees C/min applied while scanning the range of 20-220 degrees C. This modulated technique allowed separation of reversible and irreversible thermal effects. The energy associated with the esterification of glycerol and citric acid, 40 J/g, was calculated from the irreversible component of the heat flow. When cornstarch was blended with glycerol and citric acid, the weight loss curves displayed prominent shifts in maxima values attributable to starch degradation. (C) 2008 Wiley Periodicals, Inc.

引用

页码：1498 / 1501

页数：4

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