Ion Exchange Effects on the Electrical Conductivity of Acidified (HC1)Sodium Dodecyl Sulfate Solutions

摘要

Prediction of solution conductivities based on the concentration of surfactant ions,counterions,and micelles requires realistic models for micellization.The mass-action model is quite reasonable to discuss micellar formation and to interpret thermodynamic data provided that the micellar aggregation number is relatively small,in the order of a few hundreds,and dispersion of micellar sizes is not significant.Conductivity data are then analyzed in terms of the Debye-Huckel-Onsager theory by treating the aqueous monomers and micelles as a solution of mixed electrolytes according to Kohlrausch's law.