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Compatibility of poly(vinyl chloride) with epoxidized polybutadiene

✍ Scribed by A.G. Margaritis; N.K. Kalfoglou

Publisher: Elsevier Science
Year: 1988
Tongue: English
Weight: 354 KB
Volume: 24
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(88)90063-8

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✦ Synopsis

The plasticization of poly(vinyl chloride) (PVC) with epoxidized polybutadiene (EPB) is examined, as a function of the degree of PB epoxidation, its microstructure and molecular weight. The results indicate that to give miscible EPB/PVC blends, the degree of epoxidation should be ca. 50 mol% in oxirane. Although EPB with pendant oxirane units shows higher miscibilty than EPB containing oxirane units in the main chain, this effect is masked by the lower T s of the latter product, when tensile properties are examined. A miscibility predictive scheme, based on solubility and copolymer-copolymer miscibility theories, is successfully tested.

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