Calculation of a Ternary Phase Diagram for the Nonsolvent-Solvent-Polymer System

Abstract

Abstract: A new generalized form of the Flory-Huggins equation was suggested, in which the interaction parameters in the binary mixture should be kept as the concentration of the binary mixture in the ternary system.The new equationts for the calculation of Binodal and Spinodal curves in the ternary system were developed. The effect of a polymer/solvent interaction parameter concentration dependence in the new and old forms was discussed.The results showed that the new Flory-Huggins equation is a more generalized form. The ternary phase diagrams calculated in the new and old forms were obviously different.The ternary phase diagrams of CA-acetone-water and CA-dioxane-water approach to the results obtained from the measurements.

Key words: Flory-Huggins equation, Phase diagram, Calculation

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HAO Ji-Hua, WANG Shi-Chang. Calculation of a Ternary Phase Diagram for the Nonsolvent-Solvent-Polymer System[J]. Chem. J. Chinese Universities, 1995, 16(12): 1831.

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Calculation of a Ternary Phase Diagram for the Nonsolvent-Solvent-Polymer System

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