Reactivity ratios for the oxidative copolymerizations of indene with methyl methacrylate and methacrylonitrile

De, Priyadarsi and Sathyanarayana, DN and Sadasivamurthy, P and Sridhar, S (2002) Reactivity ratios for the oxidative copolymerizations of indene with methyl methacrylate and methacrylonitrile. In: European Polymer Journal, 38 (5). 847-855 .

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Abstract

The copolyperoxides of indene with methyl methacrylate and methacrylonitrile have been synthesized by the free-radical-initiated oxidative copolymerization of indene and the monomers. The compositions of copolyperoxides, obtained from H-1 and C-13 NMR spectra, have been utilized to determine the reactivity ratios. The reactivity ratios indicate that the copolyperoxides contain a large proportion of the indene units in random placement. Thermal degradation studies of the copolyperoxides by differential scanning calorimetry and electron-impact mass spectroscopy support alternating peroxide units in the copolyperoxide chain. The energy of activation for thermal degradation suggests that the degradation is controlled by the dissociation of the peroxide (-O-O-) bonds in the copolyperoxide chain. The flexibility of copolyperoxide in terms of glass transition temperature (T-g) has also been examined. (C) 2002 Elsevier Science Ltd. All rights reserved.

Item Type:	Journal Article
Publication:	European Polymer Journal
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	Copolyperoxides;Reactivity ratios;Exothermic thermal degradatio
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	28 Jul 2011 09:54
Last Modified:	28 Jul 2011 09:54
URI:	http://eprints.iisc.ac.in/id/eprint/39377

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