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- W2019243669 abstract "Products of thermal breakdown of a mixture of polyvinylchloride (PVC) and polypropylene (PP) were examined at 200°, and characteristic products of radical decomposition of PP were found. It was established that the addition of an inhibitor in small concentrations to the polymer reduces the rate of liberation of HCl. The rate of radical formation in PVC was determined by an inhibitor method at 130° and found to be 5·5×10−9 mole/g·min; decomposition of PVC initiated with dicumyl peroxide was studied at 130°. In initiated decomposition of PVC radicals take part in the formation of HCl and chain rupture takes place by radical recombination. The yield of HCl per radical formed was determined. Kinetics of dehydrochlorination of PVC were studied at different temperatures and the formation examined of HCl in the presence of different additives in ampoules. Different reactions of HCl formation were established in an HCl atmosphere without HCl. Results were explained from the point of view of initiation of thermal breakdown by bimolecular interaction of labile Cl atoms with H atoms of the polymer to form an HCl molecule and two macroradicals capable of further liberating HCl to form macroradicals with a double bond. HCl promotes ionic molecular reactions in PVC by thermal breakdown of PVC." @default.
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- W2019243669 date "1974-01-01" @default.
- W2019243669 modified "2023-09-26" @default.
- W2019243669 title "Study of thermal breakdown of polyvinylchloride" @default.
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