Abstract
Phase diagrams have been determined as a function of temperature for the followihg systems; water-dodecane-surfactants (nonionic surfactant: anionic surfactant=80:20-95:5), water-surfactants (nonionic surfantant: anionic surfactant=90:10).
By the effects of anionic surfactant, Phase Inversion Temperature (PIT) rised in these systems, and anisotropic liquid crystalline phase regions expanded as a function of temperature.
Consequently, the translucent emulsion region and gel region were formed in O/W emulsion region.
In order to understand the specific characteristic of the meso phase, polarizing microscopic patterns, viscosity, differential scanning calorimetery curves and small angle X-ray diffraction patterns were measured.
These are important for the cosmetic chemists who are charged with developing a stable product.
