Dynamic dilational surface properties of submicellar multicomponent surfactant solutions. Part 1.—Theoretical

Abstract

The surfaces of soluble surfactant solutions exhibit viscoelastic dilational behaviour and their properties may be investigated using surface longitudinal waves generated by small amplitude sinusoidal displacements. A theoretical description of the dynamic dilational surface properties of multicomponent surfactant solutions subject to such displacements has been developed for a system where surface relaxation is due entirely to diffusion and micelles are absent. The properties of the resultant equations for some model systems obeying a simplified equation of state have been investigated.