Abstract
Poly( p-phenylene sulphide), poly(2-methyl phenylene sulphide) and poly(2,6-dimethyl phenylene sulphide) have been subjected to comparative thermal analysis utilising thermogravimetry and isothermal weight loss studies in air and nitrogen. Comparative thermal stabilities have been evaluated and related to polymer structure. Activation energies for decomposition have been evaluated and are discussed. The related poly( p-phenylene sulphone) and poly(2-methyl phenylene sulphone) have also been studied and their behaviour analysed in the light of their possible formation during thermal oxidative degradation and air curing of the parent poly(phenylene sulphides).
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