Stoichiometric interpretation of thermoplastic starch water sorption and relation to mechanical behavior

被引：25

作者：

Ayadi, Farouk ^{[1
]}

Dole, Patrice ^{[1
]}

机构：

[1] INRA, UMR FARE, Equipe Transformat Physicochim Mat Lignocellulos, F-51687 Reims 2, France

来源：

CARBOHYDRATE POLYMERS | 2011年 / 84卷 / 03期

关键词：

Plasticized starch; Glycerol; Interaction stoichiometry; Cellulose; PLASTICIZED STARCH; AMYLOPECTIN FILMS; NATURAL FIBERS; COMPOSITES; CELLULOSE; GLYCEROL; AMYLOSE; BLENDS; RELAXATION; HUMIDITY;

D O I：

10.1016/j.carbpol.2010.12.024

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The characterization of glycerol plasticized starch by water sorption was interpreted in terms of interaction stoichiometry. The saturation of starch was found to correspond to a 2:1 anhydroglucose unit/glycerol stoichiometric ratio. The introduction of cellulose into the formulation of plasticized starch (TPS) decreased the quantity of bonded glycerol, due to the strong interaction between cellulose and starch. The systematic study of the TPS properties in the whole range of relative humidities showed transitions which were not connected to the "saturation transition" or to the glass transition. Breaking properties probably depended on a complex combination of different system characteristics. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：872 / 880

页数：9

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