Abstract

The statistical thermodynamics of microemulsions is investigated on the basis of a model which represents microemulsion structure as a random geometry of interspersed oil and water domains generated by a Voronoi tesselation, with the surfactant adsorbed at the boundary. The resulting one-parameter free energy function predicts two- and three-phase equilibria bearing a strong resemblance to experimental observations on certain alkyl aryl sulfonate–oil–brine microemulsion systems.

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