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Characterization and thermal properties of poly(n-butyl acrylate-g-styrene) graft copolymers

✍ Scribed by José Luis de la Fuente; Marta Fernández-García; Enrique López Madruga

Publisher: John Wiley and Sons
Year: 2001
Tongue: English
Weight: 179 KB
Volume: 80
Category: Article
ISSN: 0021-8995
DOI: 10.1002/1097-4628(20010502)80:5<783::aid-app1155>3.0.co;2-5

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✦ Synopsis

Poly(butyl acrylate-g-styrene) graft copolymers were prepared by free-radical polymerization using a polystyrene macromonomer carrying a methacryloyloxy group at the chain end and they were characterized by size-exclusion chromatography, and Fourier transform infrared spectroscopy. Glass transition temperatures and degradation behavior were determined by thermal analysis. Only a single glass transition temperature was observed for the resulting graft copolymers, indicating the miscibility between the poly(styrene) phase and poly(butyl acrylate) (pBA) phase in the graft copolymer. The incorporation of polystyrene segments in the graft copolymer improved the thermal stability of pBA and enhanced the apparent activation energy for the thermal degradation of pBA.

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