Devarajan, R. ; Balakrishnan, T. ; Santappa, M. ; Vishwanathan, B. (1981) γ-Radiation-induced solution polymerization of some methyl aryloxymethacrylates polymar journal (Japan), 13 (7). pp. 615-622. ISSN 0032-3896
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Official URL: http://www.jstage.jst.go.jp/article/polymj/13/7/13...
Related URL: http://dx.doi.org/10.1295/polymj.13.615
Abstract
The kinetics of γ-radiation-induced solution polymerization of methyl phenoxymethacrylate (MPMA) and methyl p-cresoxymethacrylate (MCMA) in toluene has been studied at 30 and 0°C and at dose rates of 0.3, 0.15, and 0.75 Mradh-1. The rates of polymerization, which were found to increase with increasing monomer concentration, have direct dependence on dose rate and [monomer] and have inverse dependence on [solvent]. The apparent energies of activation measured at 0.3 Mrad h-1 for MPMA and MCMA respectively are: 46.8 kJ mol-1 and 11.7 kJ mol-1. The polymerization proceeded in spite of the presence of the inhibitor p-hydroxyphenyl methyl ether (PHME). This suggests that the mechanism of polymerization may be predominantly ionic. A suitable reaction scheme has been proposed.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Japan Science and Technology Information Aggregator, Electronic. |
| Keywords: | γ Radiation; Solution Polymerization; Methyl Phenoxymethacrylate; Methyl P-cresoxymethacrylate; Dose Rates; Kinetics; Reaction Scheme |
| ID Code: | 88865 |
| Deposited On: | 29 Mar 2012 14:24 |
| Last Modified: | 29 Mar 2012 14:24 |
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