Calculation of the change in the solid-liquid interfacial tension for adsorption from binary liquid mixtures

Research output: Article

18 Citations (Scopus)

Abstract

A non-graphical solution of the Gibbs adsorption isotherm equation is proposed for solid-binary liquid systems which obey the Everett-Schay function. The composition dependence of the bulk activity is represented by the n parametric Redlich-Kister equation. The interfacial tension σ is then expressed as a function of the mole fraction x1 according to σ(x1) = σ02 + J ln (1 + Kx1)+ {A figure is presented}Ljxj+11. A physical meaning is assigned to each parameter σ02, J, K, Lj. The application of the equation derived is presented for several solid-binary liquid systems and the dependence of the results on the reliability of the activity data is considered. The method can also be applied to liquid-vapour interfaces.

Original languageEnglish
Pages (from-to)1-11
Number of pages11
JournalColloids and Surfaces
Volume34
Issue number1
DOIs
Publication statusPublished - jan. 1 1988

ASJC Scopus subject areas

  • Engineering(all)

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