Photolytic Oxidation of Isotactic Polystyrene in Presence of Sulfur Dioxide
The reaction of isotactic polystyrene in the presence of sulfur dioxide and oxygen at constant light intensity was studied as a function of temperature. The gas pressures were kept constant, oxygen was present in excess (150mmHg) and the sulfur dioxide pressure was quite small (0.85mmHg). A general survey was presented previously of polymer-gas reactions (air pollutants) such as NO2 and SO2 1); it was ascertained then, that the presence of SO2 gives rise or enhances chain scission. The effect of NO2 on polystyrene and butyl rubber was studied in detail previously2).
KeywordsPolymer Film Sulfur Dioxide Intrinsic Viscosity Chain Scission Butyl Rubber
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