STRUCTURAL-CHANGES IN AN AQUEOUS MICELLAR SYSTEM OF A CATIONIC SURFACTANT

Conductivity and viscosity measurements at various temperatures have b een used to characterize aqueous solutions of dodecylquinolinium bromi de (DDQB) micelles with increasing concentration. The viscosity increa se has been attributed to a change in the shape of the micelles from a pherical to rod-like. From viscosity and conductivity measurements it was observed that the micelles grow in size with increasing concentrat ion and from a hexagonal lyotropic phase above concentration 1.3 mol/d m3.