Phase equilibria in a model microemulsion

P. Balbuena, C. Borzi and B. Widom

Physica A: Statistical Mechanics and its Applications, 1986, vol. 138, issue 1, 55-75

Abstract: The phase equilibria in an earlier model of a microemulsion are determined for varying values of the surfactant-film-curvature and interaction-energy parameters. When there is no curvature bias (Bancroft parameter = 0), so that the oil and water components play symmetrical roles, we find a critical endpoint, at which the locus of critical points between oil- and water-rich phases and the locus of oil-water-microemulsion triple points both terminate. This is the analog of the Lifshitz point (although the ordering is different) in the anisotropic next-nearest-neighbor Ising (ANNNI) model in vanishing external field. The evolution of the phase diagram as the curvature-bias parameter departs from 0 and as the oil-water interaction energy varies is traced.

Date: 1986
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:138:y:1986:i:1:p:55-75

DOI: 10.1016/0378-4371(86)90173-1

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