Polymerization of acrylonitrile initiated by Ce(IV)-sucrose redox system: A kinetic study

Mahadevaiah and Demappa, T. and Sangappa and Katoon, Bibi Ahamadi (2008) Polymerization of acrylonitrile initiated by Ce(IV)-sucrose redox system: A kinetic study. Journal of Applied Polymer Science, 108 (6). pp. 3760-3768. ISSN 1097-4628

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Official URL: https://doi.org/10.1002/app.27989


Abstract The polymerization of acrylonitrile (M), initiated by the free radicals formed in situ in the Ce (IV)-sucrose redox system, was studied in aqueous sulfuric acid medium under nitrogen atmosphere in the temperature range of 30–60°C. The rate of polymerization is proportional to M1.0, R0.76, Ce(IV)0.8, and H+−0.46. The rate of Ceric ion disappearance and the rate of polymerization Rp have been measured. The effects of some water–miscible organic solvents, surfactants, ionic strength, and complexing agents on the rate of polymerization were investigated. The temperature-dependence of the rate was studied and the activation parameters were computed using the Arrhenius and Eyring plots. A mechanism consistent with the experimental data, involving Ce(IV)-sucrose complex formation, which generates free radicals, is suggested. The chain termination step of the polymerization reaction was determined. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008

Item Type: Article
Uncontrolled Keywords: acrylonitrile, Ce(IV)-sucrose, redox
Subjects: M Polymer Science > Polymer Science
Divisions: PG Centre Mandya > Polymer Science
Depositing User: Manjula P Library Assistant
Date Deposited: 22 Aug 2019 07:01
Last Modified: 22 Aug 2019 07:01
URI: http://eprints.uni-mysore.ac.in/id/eprint/6879

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