THERMODYNAMIC PROPERTIES OF ADDITIVE-SURFACTANT-WATER TERNARY-SYSTEMS

Thermodynamic properties of water-additive-surfactant ternary systems are sensitive to the nature of the additive since it can interact with the dispersed and/or the micellar phases. If the additive does not penetrate the micelles, the interactions between the additive and water and/or the dispersed surfactant hardly affect the properties, If the additive solubilizes in the micelles, the interactions between micelles and additives more or less strongly affect the properties, depending essentially on the hydrophobic moiety of the additive. Thermodynamic studies on the effect of the nature of both the additive and the surfactant are discussed.