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- W4229690524 abstract "The effect of two tosylate salts and a zinc sulfonated polystyrene ionomer (ZnSPS) on the thermal stability of bisphenol A polycarbonate (PC) was investigated using thermal gravimetric analysis (TGA), gel permeation chromatography (GPC) and gas chromatography–mass spectroscopy (GC–MS). Desulfonation of the tosylate salts and ZnSPS occurred above 350 °C, and the products of desulfonation, sulfur dioxide, water and sulfurous acid, accelerated the degradation of PC. Below 300 °C, neither the tosylate salts nor the ionomer had a significant effect on the PC stability. The ionomer did promote some degradation of the PC, which was attributed to water due to the hygroscopic nature of the ionomer and to complexation of the zinc sulfonate with the carbonyl group, which renders it more susceptible to ester interchange reactions. The effect of the arylsulfonates was in stark contrast to that of arylcarboxylate salts, which react with PC by direct nucleophilic attack of the carboxylate group on the carbonate group and severely degrade the PC." @default.
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- W4229690524 date "2004-05-01" @default.
- W4229690524 modified "2023-09-27" @default.
- W4229690524 title "The effect of tosylate salts and zinc sulfonated polystyrene ionomer on the thermal stability of bisphenol A polycarbonate" @default.
- W4229690524 doi "https://doi.org/10.1016/s0141-3910(03)00401-4" @default.
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