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- W1968111966 abstract "The photo-oxidative chain scission of isotactic polystyrene films has been studied as a function of the degree of crystallinity, SO2, and NO2 pressures, and temperature. The rate of chain scission increases in the presence of SO2 with extent of crystallinity. It is assumed to be faster due to strain in and near the folds in the crystalline areas than in the amorphous regions. In the presence of NO2, chain scission increases up to about 8% crystallinity but subsequently becomes constant with further increase in crystallinity. It is suggested that the diffusion rates of oxygen and nitrogen dioxide into the films decrease with increasing crystallinity. These two processes compensate each other." @default.
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- W1968111966 date "1971-05-01" @default.
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- W1968111966 title "Degradation of polymers and morphology: Photo-oxidative degradation of isotactic polystyrene in presence of sulfur dioxide as function of polymer crystallinity" @default.
- W1968111966 doi "https://doi.org/10.1002/pol.1971.150090508" @default.
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