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Chemiluminescence in conjunction with x‐ray photoelectron spectroscopic surface analysis has been used to elucidate the thermooxidation of polyarylethersulfone HTA film between 85 and 110°C. Oscillations have been observed in chemiluminescence at different wavelengths and in the concentration of newly identified sulfine intermediates. A reaction mechanism is proposed to account for the chemiluminescence and product behaviors. This mechanism features parallel intramolecular and intermolecular pathways branching from a common sulfinyl sulfonate intermediate; each branch produces different emittering species. Oscillating behavior appears to be general for polyarylsulfone films.
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Sharon K. Brauman (1992) studied this question.
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