Abstract

AbstractIt was found that the rate of secondary photooxidation reactions initiated by light not absorbed by polystyrene (PS) is related to the concentration of carbonyl compounds produced initially in pure PS films. Photochemical experiments carried out with a group of twelve low‐molecular‐weight compounds as models of the most likely carbonyl products of PS photooxidation showed that mainly diketones sensibilize the long‐wave UV photooxidation of polystyrene.

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