Effect of Humidity on the Photodegradation of Polyvinylchloride

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  • ポリ塩化ビニルの光劣化に及ぼす水分の影響
  • ポリ エンカ ビニル ノ ヒカリ レッカ ニ オヨボス スイブン ノ エイキョ

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Abstract

Raported are the effect of humidity on the photodegradation of PVC. Photodegradation rate of PVC films slowed down under high percentage of humidity in weathering atomosphere. It is shown that main chain scission was retarded by the existence of water, which would start next to oxidation. Further experiments using copper sulfate with various contents of crystal water suggested that crystal water also restrained photodegradation.

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