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Synthesis and characterization of copolyperoxides of indene with styrene, \alpha -methylstyrene, and \alpha -phenylstyrene

De, Priyadarsi and Sathyanarayana, DN (2002) Synthesis and characterization of copolyperoxides of indene with styrene, \alpha -methylstyrene, and \alpha -phenylstyrene. In: Journal of Polymer Science Part B: Polymer Physics, 40 (18). 2004 - 2017.

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Abstract

The oxidative copolymerization of indene with styrene, \alpha -methylstyrene, and \alpha -phenylstyrene is investigated. Copolyperoxides of different compositions have been synthesized by the free-radical-initiated oxidative copolymerization of indene with vinyl monomers. The compositions of the copolyperoxides obtained from the $^1H and ^1^3C$ NMR spectra have been used to determine the reactivity ratios of the monomers. The reactivity ratios indicate that indene forms an ideal copolyperoxide with styrene and \alpha -methylstyrene and alternating copolyperoxides with \alpha -phenylstyrene. Thermal degradation studies via differential scanning calorimetry and electron-impact mass spectroscopy support the alternating peroxide units in the copolyperoxide chain. The activation energy for thermal degradation suggests that the degradation is dependent on the dissociation of the peroxide (-O-O-) bonds in the backbone of the copolyperoxide chain. Their flexibility has been examined in terms of the glass-transition temperature.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to John Willey & Sons
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 29 May 2007
Last Modified: 19 Sep 2010 04:38
URI: http://eprints.iisc.ernet.in/id/eprint/11096

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