The aspect ratio and gas permeation in polymer-layered silicate nanocomposites

被引：106

作者：

Osman, MA ^{[1
]}

Mittal, V ^{[1
]}

Lusti, HR ^{[1
]}

机构：

[1] ETH, Inst Polymer, Dept Mat, CH-8092 Zurich, Switzerland

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2004年 / 25卷 / 12期

关键词：

aspect ratio; epoxy; gas permeation; nanocomposites; polyurethanes;

D O I：

10.1002/marc.200400112

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Organophilized montmorillonite-epoxy and polyurethane nanocomposites, useful for packaging applications, were prepared and their oxygen permeability was mixed, exfoliated and intercalculated, as shown by wide-angle X-ray diffraction (WAXRD) and transmission electron microscopy (TEM). The gas-barrier performance of the polyurethane composites was better than that of the epoxy composites due to more exfoliation. The average aspect ratio of the montmorillonite platelets in the nanocomposites could be estimated from the reduction in permeability by a numerical finite element approach.

引用

页码：1145 / 1149

页数：5

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