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Thermal analysis of compounded poly(vinyl chloride)

✍ Scribed by P. Dunn; B. C. Ennis

Publisher
John Wiley and Sons
Year
1970
Tongue
English
Weight
484 KB
Volume
14
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

Differential thermal analysis of mixtures of poly(vinyl chloride) and dioctyl phthalate shows a compound endothermic peak due to decomposition of both polymer and plasticizer. The thermal behavior of other plasticizers is similarly affected in the presence of poly(vinyl chloride). The addition of zinc oxide or ferric oxide decreases the thermal stability of the mixture and, under isothermal conditions, a resultant induction period allows the estimation of an activation energy for the dehydrochlorination of poly‐(vinyl chloride) and of the relative effectiveness of thermal stabilizer systems.

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An emulsion, poly(vinyl chloride) (PVC), was analyzed for its components and was used in the preparation of flexible PVC plates utilizing sol-gel processing technology. PVC contained an ether-soluble fraction having carboxylic acid carbonyl groups, a tetrahydrofurane (THF)-insoluble fraction having