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The photodegradation of poly(vinyl chloride)—VI. The effect of oxygen and hydrogen chloride on the dehydrochlorination reaction

✍ Scribed by W.H. Gibb; J.R. MacCallum

Publisher
Elsevier Science
Year
1974
Tongue
English
Weight
233 KB
Volume
10
Category
Article
ISSN
0014-3057

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✦ Synopsis

It is found that oxygen accelerates the photodecomposition of poly(vifiyl chloride) whereas hydrogen chloride inhibits it. It is postulated that 02 quenches energy-rich polyenes and reacts in the singlet state ultimately yielding carbonyl functions which themselves absorb the radiation and speed up the photodecomposition. The HCI is thought to undergo addition to already formed polyenes thereby reducing the amount of light absorbed and consequently causing retardation.

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