Photodegradation of PVC stabilized with cadmium stearate- II

PVC mixtures were exposed to radiation of 300–400 nm wavelength, with emission maximum at 345 nm. Structural changes were studied by i.r. and u.v. spectroscopy. The amounts of short and long conjugated sequences formed in the polymer during heat treatment increase with increasing Cd stearate content...

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Bibliographic Details
Published in:European polymer journal 1985, Vol.21 (12), p.1035-1038
Main Authors: Vymazal, Z., Švorčik, V.
Format: Article
Language:English
Subjects:
Applied sciences
Crosslinking and degradation
Exact sciences and technology
Physicochemistry of polymers
Polymers and radiations
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Summary:PVC mixtures were exposed to radiation of 300–400 nm wavelength, with emission maximum at 345 nm. Structural changes were studied by i.r. and u.v. spectroscopy. The amounts of short and long conjugated sequences formed in the polymer during heat treatment increase with increasing Cd stearate content. These structures are supposed to substantially affect the first stage of exposure of the stabilized polymer. The increase in the exposure time needed for all the Cd stearate to be taken up is related to the amounts of CO groups and conjugated double bonds in the polymer.
ISSN:0014-3057
1873-1945
DOI:10.1016/0014-3057(85)90210-1