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    Permeability modelling of polymer-layered silicate nanocomposites

    Access Status
    Fulltext not available
    Authors
    Lu, Chunsheng
    Mai, Y.
    Date
    2007
    Type
    Journal Article
    
    Metadata
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    Citation
    Lu, Chunsheng and Mai, Yiu-Wing. 2007. Permeability modelling of polymer-layered silicate nanocomposites. Composites Science and Technology. 67 (14): pp. 2895-2902.
    Source Title
    Composites Science and Technology
    DOI
    10.1016/j.compscitech.2007.05.008
    ISSN
    0266-3538
    Faculty
    Faculty of Science and Engineering
    Department of Mechanical Engineering
    School of Civil and Mechanical Engineering
    Remarks

    The link to the journal’s home page is: http://www.elsevier.com/wps/find/journaldescription.cws_home/405929/description#description

    Copyright © 2007 Elsevier Ltd. All rights reserved

    URI
    http://hdl.handle.net/20.500.11937/44686
    Collection
    • Curtin Research Publications
    Abstract

    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.

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