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The thermal decomposition of polyvinylchloride—ii.: Peroxide structures as initiators for dehydrochlorination

✍ Scribed by W.C. Geddes

Publisher
Elsevier Science
Year
1967
Tongue
English
Weight
786 KB
Volume
3
Category
Article
ISSN
0014-3057

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✦ Synopsis

The presence of dicumyl peroxide, benzoyl peroxide, cumene hydroperoxide or azobisisobutyronitrile in PVC leads to increased dehydrochlorination at 150 ° in nitrogen. Hydroperoxide groups introduced during ozonization of degraded PVC have similar effects on the thermal stability of PVC but attempts to oxidize PVC have little or no effect on either peroxide content or dehydrochlorination. Kinetic results indicate a chain reaction when dehydrochlorination is initiated by radical sources. The results are discussed in terms of mechanisms of thermal dehydrochlorination with special reference to initiation and stabilization.

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