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Miscible Blends Formed From Intrapolymer Repulsive Interactions: 2. Phase Behavior Of Blends Of Bisphenol A Polycarbonate And Zinc-Sulfonated Polystyrene Ionomers, Rui Xie, Robert Weiss
Miscible Blends Formed From Intrapolymer Repulsive Interactions: 2. Phase Behavior Of Blends Of Bisphenol A Polycarbonate And Zinc-Sulfonated Polystyrene Ionomers, Rui Xie, Robert Weiss
Robert Weiss
The phase behavior of mixtures of bisphenol A polycarbonate and the zinc salts of lightly sulfonated polystyrene ionomers (Zn-SPS) was studied as a function of the sulfonation level and the molecular weight of the ionomer. This system exhibits upper critical solution temperature (UCST) phase behavior and miscibility is attributed to intramolecular repulsion between the ionic and non-ionic groups of the ionomer. The cloud point temperature decreased with increasing sulfonation level of the ionomer over the range of 8.7–13.7 mol.%, and it inscreased with increasing molecular weight of Zn-SPS for a fixed sulfonation level. Fourier transform infrared spectroscopy revealed that no …