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Thermal degradation of vinyl chloride-vinyl acetate copolymers — I. Bulk degradation studies by thermal volatilization analysis

✍ Scribed by N. Grassie; I.F. McLean; I.C. McNeill

Publisher
Elsevier Science
Year
1970
Tongue
English
Weight
397 KB
Volume
6
Category
Article
ISSN
0014-3057

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✦ Synopsis

The rates of production of volatile material from PVA, PVC and vinyl acetate-~inyl chloride copolymers, covering the entire composition range, have been compared using thermal volatilization analysis. It is found that, at each extreme of the composition range, incorporation of the co-monomer unit results in a copolymer less stable than the homopolymer. Minimum stability occurs for compositions of approximately 40-50 per cent VA. The proportions of acetic acid and hydrogen chloride produced from the copolymers appear to remain constant during degradation, indicating that neither is evolved preferentially, once reaction has begun.

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