CHARACTERISTICS OF SODIUM BENZENESULFONATES MICELLES

Surface tension, conductivity and light scattering measurements have b een used to characterize the colloidal properties of aqueous solutions of sodium 2-methyl-5-(1-oxo-octyl)-and thyl-5-(1-hexyl-1-hydroxyhepty l)benzenesulfonates. The critical micelle concentration, the shape and size of micelles, the number of charges on their surface and the ther modynamic functions have been determined. The usefulness of various ty pes of colloidal micelles to recovery of petroleum have been compared.