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Polymerisation of methyl methacrylate initiated by ozonates of Tetramethylethene.

Lockley, J. E. and Ebdon, J. R. and Rimmer, S. and Tabner, B. J. (2001) Polymerisation of methyl methacrylate initiated by ozonates of Tetramethylethene. Polymer, 42 (5). pp. 1797-1807. ISSN 0032-3861

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It is confirmed that the major products of ozonolysis of tetramethylethene (TME) in butyl acetate at temperatures between −60 and 20°C are the cyclic peroxides, acetone diperoxide and acetone triperoxide plus, at low temperatures, species which may be open-chain oligoperoxides. Solutions of ozonized TME are able to initiate polymerizations of methyl methacrylate at temperatures above 60°C. ESR spectroscopy has shown that acetone diperoxide does not generate significant concentrations of radicals below 140°C, so that the chief initiating species below this temperature must be acetone triperoxide and the oligoperoxides. Despite the fact that these species have different structures, indicated by their differing retention times in GC and also their different mass spectra, they behave kinetically as one species, i.e. conversions to polymer after polymerization times of 1 h in the presence of ozonized TME are identical regardless of ozonolysis temperature.

Item Type: Journal Article
Journal or Publication Title: Polymer
Uncontrolled Keywords: Ozonolysis ; Tetramethylethene ; Radical
Subjects: ?? ge ??
Departments: Faculty of Science and Technology > School of Computing & Communications
Faculty of Science and Technology > Physics
Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 21552
Deposited By: ep_ss_importer
Deposited On: 21 Jan 2009 11:36
Refereed?: Yes
Published?: Published
Last Modified: 22 May 2018 02:29
Identification Number:

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