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The effect of thermal processing on PVC—IV. Photo-oxidation of stabilized PVC

✍ Scribed by G. Scott; M. Tahan; J. Vyvoda

Publisher
Elsevier Science
Year
1979
Tongue
English
Weight
229 KB
Volume
15
Category
Article
ISSN
0014-3057

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✦ Synopsis

The effects of a tin maleate stabilizer and of typical processing lubricants (Wax E and calcium stearate) on the photo-oxidation of PVC have been examined. The latter are found to have a relatively minor effect but the tin maleate stabilizer introduces an induction period to photo-oxidation, related to the amount remaining from the thermal processing operation. The function of the stabilizer is to eliminate the formation of polyconjugated unsaturation and of peroxides during thermal processing; this function persists to the photo-oxidation stage.

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