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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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|
|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|
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