Permeability modelling of polymer-layered silicate nanocomposites

Chunsheng Lu, Yiu Wing Mai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

85 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)2895-2902
Number of pages8
JournalComposites Science and Technology
Issue number14
Publication statusPublished - Nov 2007
Externally publishedYes


  • A. Nanostructures
  • A. Polymer-matrix composites (PMCs)
  • B. Mechanical properties
  • B. Modelling

ASJC Scopus subject areas

  • Ceramics and Composites
  • General Engineering


Dive into the research topics of 'Permeability modelling of polymer-layered silicate nanocomposites'. Together they form a unique fingerprint.

Cite this