Thermoplastic starch-clay nanocomposites and their characteristics

被引：204

作者：

Chen, BQ ^{[1
]}

Evans, JRG ^{[1
]}

机构：

[1] Univ London, Queen Mary, Dept Mat, London E1 4NS, England

来源：

CARBOHYDRATE POLYMERS | 2005年 / 61卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

starch; nanocomposite; clay; morphology; elastic modulus;

D O I：

10.1016/j.carbpol.2005.06.020

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In the quest for improved performance from polymers that offer biodegradation and therefore environmental acceptability, one approach is the addition of natural clays to produce nanocomposites. This study examines nanocomposites of glycerol-plasticized starch, with untreated montmorillonite and hectorite. Treated hectorite and kaolinite were added to produce conventional composites within the same clay volume fraction range for comparison. X-ray diffraction and transmission electron microscopy are used to confirm the type of composite. The ultrasonic pulse-echo technique was used to measure Young's and shear modulus. The nanocomposites presented greater increases in modulus for a given volume fraction of clay thus contributing to this new class of biodegradable and environmentally acceptable materials, although the results indicate that a plasticizer other than glycerol is preferable. (C) 2005 Elsevier Ltd. All rights reserved.

引用

页码：455 / 463

页数：9

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