Influence of structure on the photo-degradation of PVC: Part II—A preliminary approach to the study of photo-oxidation and of the quantum yield of dehydrochlorination
作者： F. Castillo , G. Martínez , R. Sastre , J. Millán , V. Bellenger
DOI: 10.1016/0141-3910(85)90010-2
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摘要: Abstract An industrial PVC sample (IS), prepared in bulk, and its acetone soluble (S) insoluble (I) fractions, obtained by extracting with under nitrogen, were characterized determining their molecular weights, the tacticity content of carbonyl groups unsaturation. Films, cast from tetrahydrofuran solution, irradiated two different irradiation systems: one allowed for both kinetics quantum yield dehydrochlorination presence oxygen, to be determined accurately; other made it possible follow low rate photo-oxidation air. The kinetic curves show an induction period followed a stationary rate. From extent former is inferred that initial photo-stability increases order S
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