The influence and interpretation of surface parameters for wetting transitions in ternary mixtures

C. J. Boulter, F. Clarysse

Research output: Contribution to journalArticle

Abstract

Starting from a microscopic Hamiltonian defined on a semi-infinite cubic lattice, and employing a mean-field approximation, the surface parameters relevant for wetting in confined ternary mixtures are derived. These are found in terms of the microscopic coupling constants, and yield a physical interpretation of their origins. In comparison with the standard expression for the surface free-energy density, several new terms arising from the derivation are identified. The influence of the surface parameters on a predicted unbinding transition in a mixture of oil, water, and amphiphile demonstrate that existing results are robust to the addition of the extra surface terms.

Original languageEnglish
Pages (from-to)1367-1374
Number of pages8
JournalInternational Journal of Thermophysics
Volume25
Issue number5
DOIs
Publication statusPublished - Sep 2004

Keywords

  • Complex fluids
  • Lattice models
  • Mean-field theory
  • Wetting transitions

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