Permeability modelling of polymer-layered silicate nanocomposites

被引：73

作者：

Lu, Chunsheng ^{[1
]}

Mai, Yiu-Wing

机构：

[1] Curtin Univ Technol, Dept Mech Engn, Perth, WA 6845, Australia

[2] Univ Sydney, Ctr Adv Mat Technol, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2006, Australia

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2007年 / 67卷 / 14期

基金：

澳大利亚研究理事会;

关键词：

polymer-matrix composites (PMCs); nanostructures; mechanical properties; modelling;

D O I：

10.1016/j.compscitech.2007.05.008

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

With the addition of very low loading of exfoliated silicate fillers, the permeability of polymer-layered silicate nanocomposites remarkably decreases. In the paper, based on comparisons between experimental results and expectations of several existing models, we propose an improved tortuosity- based model, in which the random motion of gas/liquid molecules in a constrained environment is considered. We show that the pathway of a diffusing gas/liquid molecule in exfoliated polymer-layered silicate nanocomposites is akin to a self-avoiding random walk. The estimated critical volume fractions of clay fillers for the minimum permeability, in terms of the concept of renormalization, concur with available experimental data. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：2895 / 2902

页数：8

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