Volume 22, Issue 7 pp. 627-637
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Study on osmotic pressure and liquid-liquid equilibria for micelle, colloid and microemulsion systems by Yukawa potential

Dong Fu

Dong Fu

Department of Environment Engineering, North China Electric Power University, Baoding, Hebei 071003, China

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Jiu-Fang Lu

Jiu-Fang Lu

Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

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Wei Wu

Wei Wu

Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

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Yi-Gui Li

Yi-Gui Li

Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

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First published: 26 August 2010
Citations: 5

Abstract

An equation of state (EOS) was established to study the osmotic pressure and liquid-liquid equilibria for micelle, colloid and microemulsion systems. The Carnahan-Starling equation was used for the hard sphere repulsion. The Yukawa potential was used to describe both the attractive dispersion and the double-layer repulsion. By using the established EOS, the osmotic pressures for charged colloid, uncharged micelle, uncharged and weakly charged microemulsion, the phase equilibria for uncharged micelle and charged colloid systems were studied.

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