Application of Continuous Thermodynamics to the Stability of Polymer Systems. III |
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| Authors: | Dieter Browarzik Horst Kehlen Margit T Rätzsch Joachim Bergmann |
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| Institution: | 1. Chemistry Department , “Carl Schorlemmer” Technical University , Merseburg, DDR-4200, German Democratic Republic;2. Mathematics and Physics Department , “N. K. Krupskaja” Pedogogical University , Halle, DDR-4020, German Democratic Republic |
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| Abstract: | Based on the stability theory of continuous thermodynamics for polymer solutions, necessary and sufficient conditions for multiple critical points are derived assuming the segment-molar excess Gibbs free energy to be independent of the distribution function. Equations for calculating double and triple critical points are given. Higher order critical points may be obtained in a successive way. For polymers possessing a Schulz-Flory molecular weight distribution, general conditions for an m-fold critical point are presented. |
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