SOLUTION PROPERTIES OF OCTYL BETA-D GLUCOSIDE .1. AGGREGATE SIZE, SHAPE AND HYDRATION

Aqueous solutions of octyl-beta-D-glucoside have been examined in a wi de concentration range. By combining information from density, viscosi ty and dielectric permittivity, the transition from molecular to micel lar state has been evidentiated. Classical equations for the viscosity colloidal dispersions have been reexamined and applied to get informa tion on micelle shape. A combined analysis of dielectric and viscosity findings indicates a slight and continuous dependence of micellar sha pe on surfactant content. The role of hydration on micellar stability is significant.