Effect of acetamide on the critical micelle concentration of aqueous solutions of some surfactants

The variations of molar conductivity of various surfactants such as sodium caprylate, sodium laurate, sodium palmitate, sodium stearate, sodium oleate, sodium aodecyl sulphate, and lithium dodecyl sulphate with concentration of the surfactants for each of the solutions consisting of mixtures of varying concentrations of acetamide in water at a constant temperature of 30+/-0.2 degrees C were studied. The critical micelle concentration (CMC) for each surfactant is measured. It is found that the CMC values ill mixtures of acetamide and water solutions of various surfactants are lower than the CMC values in water. (C) 1997 Elsevier Science B.V.