Title: Studies on the polymerization of vinyl compounds in the presence of metal salts, 11. The polymerization of methyl methacrylate initiated by ferric ion and thiourea or its derivatives
Abstract: Abstract The polymerization of methyl methacrylate initiated by ferric salt and thiourea in dimethyl sulfoxide solution was studied. By the substitution of hydrogen by an alkyl or aryl group in the thiourea, the rate of the polymerization decreases. The logarithm of the rate is proportional to the σ * value of Taft's equation. The results are discussed on the basis of the IR and NMR data. It was confirmed that the polymerization is initiated by a radical produced by the reaction of the ferric ion with the isothiourea which is formed from the thiourea by tautomerization. The termination of the polymerization is also discussed based on the results of kinetic studies with different kinds and concentrations of the ferric salt.
Publication Year: 1977
Publication Date: 1977-12-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 6
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