SURFACE-TENSION PREDICTION FOR LIQUID-MIXTURES

Escobedo and Mansoori (1996) recently proposed a new expression, origi nally derived from statistical mechanics, for the surface-tension pred iction of pure fluids. The theory presented here is extended to mixtur es of organic liquids based on the conformal solution theory of mixtur es. Using the proposed equation, surface tensions of 55 binary mixture s are predicted within an over-all 0.50 AAD%, which is better than oth er available prediction methods. The 55 binary mixtures are predicted within an overall 2.10 AAD% with a corresponding-states version of the theory. The expressions proposed in this work are general since they have been applied to a variety of binary mixtures, and the results obt ained agree well with the experimental data. The proposed model is dir ectly applicable to multicomponent liquid mixtures.