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Fluorescence in degraded poly(vinyl chloride)

✍ Scribed by C.E. James; R.C. Poller

Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
187 KB
Volume
22
Category
Article
ISSN
0014-3057

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✦ Synopsis

Stabilized PVC samples which have been heat treated show a relatively intense fluorescent emission band at ~ 500 nm and a weaker one at ~720 nm when irradiated at 365 nm. The intensity of the 500 nm band increases as thermal degradation continues, reaching a maximum at the point where visible discoloration occurs and then declining. It is concluded that the intense band is due to the build-up of short chain conjugated polyene sequences.

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