Abstract

Electric conductivities of sodium perfluorooctanoate solutions have been measured at different pressures from one atmosphere to 2000 kg/sq cm (1936 atm). The critical micellization concentration (CMC) increases with pressure up to approximately 1200 atm and then decreases slightly at higher pressures. The differential conductivity below the CMC decreases nearly linearly with pressure, in qualitative accord with increasing viscosity. The differential conductivity above the CMC increases nearly linearly with pressure. This increase has been ascribed to an increasing degree of dissociation alpha, of the micelles. Values of alpha have been estimated. 40 references.

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