Refined Continuous Thermodynamic Treatment for the Liquid-Liquid Equilibrium of Copolymer Solutions |
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Authors: | Margit T Rätzsch Dieter Browarzik Horst Kehlen |
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Institution: | Chemistry Department “Carl Schorlemmer” , Technical University , Merseburg, 4200, German Democratic Republic |
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Abstract: | Based on an improved calculation of activity coefficients, continuous thermodynamics using a generalized divariate Stockmayer distribution is applied to the liquid-liquid equilibrium of random copolymer solutions. The effects of the chemical polydispersity on the cloud-point curve, the shadow curve, the spinodal, and the critical point are discussed. The theory can account for the occurrence of three-phase equilibria as well as for the phase separation in pure copolymers. |
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