1964•Japanese Journal of Applied PhysicsOpen access

Gel Formation in Polyvinyl Alcohol Film by Heat Treatment after Exposure to Ultra-violet Light

Masatake Mori, Michikazu Kumagai

Abstract

The physical properties of polyvinyl alcohol are found to be changed by exposure to ultra-violet light followed by heat treatment as in the case of high energy radiations. When polyvinyl alcohol is irradiated in air by ultra-violet light, carbonyl groups are produced. The heat treatment of irradiated polyvinyl alcohol above 120°C in a silicone oil bath produces crosslinkages between molecular chains.

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Key concepts: Polyvinyl alcohol, Irradiation, Silicone oil, Polyvinyls, Silicone, Materials science, Polyvinyl chloride, Alcohol