Studies in inorgano-organic gels in pinene. Part VI. Viscosity changes with time and shear during the gelation of some soap systems in pinene

Abstract

Measurements of the viscosity changes with time taking place in the gel-forming systems of certain soaps in pinene yield η-t curves which change their shape considerably as the shear applied is varied. It is also found that the shear applied can (i) prevent or destroy the formation of a gel structure which is responsible for the acceleration of viscosity with time, and (ii) decrease the rate of formation of the micelles or of the increase in their size or degree of solvation. The plots of viscosity against the reciprocal of the shear are straight lines, indicating that the equation η- η ₀=θ/s is applicable to these soap-pinene systems.