PHASE-DIAGRAM IN A LATTICE MODEL OF SURFACTANT SOLUTIONS

Phase diagrams and correlation function of three-component mixtures containing amphiphilic particles are calculated from a model introduced previously within mean-field approximation. The phase diagram depends on interparticle interactions, and agrees qualitatively with experiment already in the simplest one-dimensional case. The surface tension between oil-and water-rich phases at coexistence with the lamellar phase is very low for all temperatures. A form of water-water structure factor in microemulsion agrees qualitatively with neutron-scattering experiments. © 1990 American Institute of Physics.