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 pe netrate the micelles, the interactions between the additive and water and/or the dispersed surfactant hardly affect the properties, If the a dditive 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 s tudies on the effect of the nature of both the additive and the surfac tant are discussed.