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- W2049460003 abstract "The photosensitised degradation of polystyrene by polyhalogenated compounds has been studied. During the sensitised photo-oxidative degradation in film and in benzene and methylene chloride solutions, there is a rapid decrease of molecular weight observed by viscosity and GPC measurements. A remarkable after-effect, with a decrease in polymer molecular weight, was also detected. The reaction rates and quantum yields for main-chain scissions are greatly increased by dibromotetrachloroethane, tetrabromophenylpropane, tetrabromononane and carbon tetrabromide. The most probable mechanism of photosensitised degradation involves initial formation of bromine atoms which preferentially attack the polymer by hydrogen atom abstraction and bromination. The effect of oxygen on the degradation is also discussed." @default.
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- W2049460003 date "1981-04-01" @default.
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- W2049460003 title "Photodegradation of polystyrene sensitised by polyhalogenated compounds" @default.
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- W2049460003 doi "https://doi.org/10.1016/0144-2880(81)90029-4" @default.
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