Free Radical Oxidative Copolymerization of Indene with Vinyl Acetate and Isopropenyl Acetate: Synthesis and Characterization

De, Priyadarsi and Sathyanarayana, DN (2002) Free Radical Oxidative Copolymerization of Indene with Vinyl Acetate and Isopropenyl Acetate: Synthesis and Characterization. In: Journal of Applied Polymer Science, 86 (3). 639 - 646.

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Abstract

Copolyperoxides of different compositions of indene with vinyl acetate and isopropenyl acetate were synthesized by the free radical-initiated oxidative copolymerization. The compositions of copolyperoxides obtained from $^1H-$ and $^1^3C-NMR$ spectra have been used to determine the reactivity ratio of the monomers. The reactivity ratios reveal that the copolyperoxides contain a larger proportion of the indene units in random placement. The NMR studies further suggest irregularities in the copolyperoxide chain possibly due to the cleavage reactions of the propagating peroxide radical. The thermal analysis by differential scanning calorimetry (DSC) supports the alternating peroxide units in the copolymer chain. The activation energy for the thermal degradation suggests that the degradation is dependent on the dissociation of the peroxide (-O-O-) bonds in the copolyperoxide chain.

Item Type:	Journal Article
Publication:	Journal of Applied Polymer Science
Publisher:	John Wiley & Sons
Additional Information:	Copyright of this article belongs to John Willey & Sons.
Keywords:	Indene copolyperoxides;Reactivity ratios;Exothermic thermal degradation
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	06 Jun 2007
Last Modified:	19 Sep 2010 04:38
URI:	http://eprints.iisc.ac.in/id/eprint/11101

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