A Study On The Thermodynamic Properties of Associated Solutions By Linear Association Models

Abstract

The excess thermodynamic properties of associated solutions are discussed by using the linear association models (I) and (II). The linear association model (I) deals with the self-associated system by making distinctions between the association constant and association energy of dimer formation and those of polymer formations. The results of the calculation show that the distinguishing effects are relatively small in quality. The linear association model (II) is proposed as one of the models for the system having the species associated with like and unlike molecules. A characteristic of this model is the existence of a maximum point on the activity coefficient curve. Good results are obtained in the application of model (II) to correlate and interpret the vapor-liquid equilibria for binary mixtures of alcohols and interacting solvents. © 1973, The Society of Chemical Engineers, Japan. All rights reserved.