期刊
COMPOSITES SCIENCE AND TECHNOLOGY
卷 70, 期 10, 页码 1557-1563出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2010.05.022
关键词
Nanocomposites; Nanoclays; Extrusion; Transmission electron microscopy (TEM); Mechanical properties
Thermoplastic starch/poly(vinyl alcohol) (PVOH)/clay nanocomposites, exhibiting the intercalated and exfoliated structures, were prepared via melt extrusion method. The effects of clay cation, water, PVOH and clay contents on clay intercalation and mechanical properties of nanocomposites were investigated. The experiments were carried out according to the Taguchi experimental design method. Montmorillonite (MMT) with three types of cation or modifier (Na+, alkyl ammonium ion, and citric acid) was examined. The prepared nanocomposites with modified montmorillonite indicated a mechanical improvement in the properties in comparison with pristine MMT. It was also observed that increases in tensile strength and modulus would be attained for nanocomposite samples with 10%, 5% and 4% (by weight) of water, PVOH and clay loading, respectively. The clay intercalation was examined by Xray diffraction (XRD) patterns. The chemical structure and morphology of the optimum sample was also probed by FTIR spectroscopy and transmission electron microscopy (TEM). (C) 2010 Elsevier Ltd. All rights reserved.
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