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A triangular lattice model for binary and ternary mixtures containing surfactants

Content Provider	Scilit
Author	Laradji, M. Guo, H. Zuckermann, M. J.
Copyright Year	1994
Description	Journal: Journal of Physics: Condensed Matter The phase equilibria of ternary mixtures of water, oil and surfactants and binary mixtures of water and surfactants are studied using a triangular lattice-gas model that is an extension of the spin-1 Blume-Capel model with the addition of the orientational degrees of freedom for surfactants. The phase diagram of the model is investigated via Monte Carlo simulations in conjunction with the extrapolation technique of Ferrenberg and Swendsen combined with the finite-size scaling method of Lee and Kosterlitz. Five phases are found for ternary mixtures in the case of equal water and oil concentrations: a water-oil coexistence region, a lamellar phase, a liquid crystalline phase, which has the symmetry of a rhombic lattice, and an extended disordered phase, which is divided by a Lifshitz line into disordered fluid and microemulsion regions. In the limiting case of a binary mixture of water and surfactants, we found a rich phase diagram corresponding to a lamellar phase, a hexagonal phase and a disordered phase. which is again divided by a Lifshitz line into disordered fluid and structured fluid regions. The latter can be considered as the analogue of the microemulsion found for the ternary systems.
Related Links	http://iopscience.iop.org/article/10.1088/0953-8984/6/15/003/pdf
Ending Page	2812
Page Count	14
Starting Page	2799
ISSN	09538984
e-ISSN	1361648X
DOI	10.1088/0953-8984/6/15/003
Journal	Journal of Physics: Condensed Matter
Issue Number	15
Volume Number	6
Language	English
Publisher	IOP Publishing
Publisher Date	1994-04-11
Access Restriction	Open
Subject Keyword	Journal: Journal of Physics: Condensed Matter Atomic, Molecular and Chemical Physics Degree of Freedom Monte Carlo Simulation Phase Diagram Triangular Lattice Phase Equilibria
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Materials Science

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