Thermal Degradation of Aromatic Polysulfones

In aromatic polysulfones, the weakest Unk was found to be the carbon-sulfur bond [517]. These polymers are processed at about 300°C. At that temperature, the thermodegradative processes as well as thermo-oxidative ones can occur. The rupture of the C-S bonds produces molecules of SO2 and fragments of the polymer molecules with terminal phenyl radicals [517]  

The phenyl radicals then abstract hydrogens from the methyl groups that are present when the polysulfone is prepared from bisphenol A  

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