Influence of aspect ratio on barrier properties of polymer-clay nanocomposites

Influence of aspect ratio on barrier properties of polymer-clay nanocomposites

The barrier properties of polymer-clay nanocomposites, with far less inorganic contents of layered-silicate fillers, are remarkably superior to those of neat polymers or their conventional counterparts. A simple renormalization group model is proposed to assess the influence of geometric factors (su...

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Veröffentlicht in:Physical review letters 2005-08, Vol.95 (8), p.088303, Article 088303
Hauptverfasser: CHUNSHENG LU, MAI, Yiu-Wing
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Sprache:eng
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Applied sciences
Composites
Exact sciences and technology
Forms of application and semi-finished materials
Polymer industry, paints, wood
Technology of polymers
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creator CHUNSHENG LU
MAI, Yiu-Wing
description The barrier properties of polymer-clay nanocomposites, with far less inorganic contents of layered-silicate fillers, are remarkably superior to those of neat polymers or their conventional counterparts. A simple renormalization group model is proposed to assess the influence of geometric factors (such as aspect ratio, orientation, and extent of exfoliation) of layered-silicate fillers on the barrier properties of polymer-clay nanocomposites. The results show that the aspect ratio of exfoliated silicate platelets has a critical role in controlling the microstructure of polymer-clay nanocomposites and their barrier properties. The estimated percolation thresholds of clay content for minimum permeability are in good agreement with experimental data.
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subjects Applied sciences
Composites
Exact sciences and technology
Forms of application and semi-finished materials
Polymer industry, paints, wood
Technology of polymers
title Influence of aspect ratio on barrier properties of polymer-clay nanocomposites
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