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Modification of chlorinated poly(vinyl chloride) by blending with epoxidized polybutadiene

✍ Scribed by Dionissia D. Sotiropoulou; Kostas G. Gravalos; Nikos K. Kalfoglou

Publisher: John Wiley and Sons
Year: 1992
Tongue: English
Weight: 427 KB
Volume: 45
Category: Article
ISSN: 0021-8995
DOI: 10.1002/app.1992.070450208

No coin nor oath required. For personal study only.

✦ Synopsis

The compatibility of epoxidized poly (cis-1,4-butadiene) (EPB) with chlorinated polyvinylchloride ( CPVC ) was investigated. Blends studied covered the complete composition range using EPB at two degrees of epoxidation: 20 and 43 mol % oxirane units. Tensile properties of EPB(63)/CPVC were also studied at the 50/50 composition. Dynamic mechanical analysis (DMA) showed that both sets of blends were miscible at the segmental level except for the rich CPVC compositions. All blends showed good tensile properties, even those where DMA indicated phase separation. This may be attributed to strong segmental interactions of the donnor-acceptor type between the oxirane and acidic-hydrogencontaining groups of these complementary dissimilar blend partners.

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