LYOTROPIC MESOPHASES OF K-PALMITATE IN PROTIC SOLVENTS

Comparing the phase diagrams of the three binary soap systems KC16/gly cerol, KC16/ethylene glycol and KC16/butylene glycol (KC16 = K-palmita te), we found alternations in types of phase diagrams that depend on t he chemical structure of the protic solvent. Variation of the polymorp hic transitions were observed. In the binary system KC16/G (G = Glycer ol) we observed the polymorphism: C <-- --> G <-- --> H <-- --> L <-- --> S (C = crystalline phase, G = gel phase, H = hexagonal phase, L = lamellar phase, S = isotropic solution). In the binary system KC16/E ( E = ethylene glycol) we found the polymorphic transitions: C <-- --> G <-- --> L <-- --> S. In the binary system KC16/B (B = butylene glycol ) we observed the same phase sequences: C <-- --> G <-- --> L <-- --> S. So we came to the conclusions that the influence, which the solutio n medium exerts on the formation of structures in binary systems is di stinct and pronounced. Differences in number, position, extension, and in the sequence of the occurring mesophases were found as a function of the composition of mixtures and temperature.