Remarkable solvent effects of oxygen- and sulfur-containing compounds on the propagation rate of methyl methacrylate

Harrisson, S., Barner-Kowollik, C., Davis, T. P., Evans, R., Rizzardo, E., Stenzel, M., & Yin, M. (2005) Remarkable solvent effects of oxygen- and sulfur-containing compounds on the propagation rate of methyl methacrylate. Zeitschrift fur Physikalische Chemie, 219(3).

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Abstract

The propagation kinetics of methyl methacrylate (MMA) in the presence of a number of oxygen- and sulfur-containing compounds have been investigated. Solvents used were 2-methyl-1,3-dioxepane (MDOP), 2,6-dithiaheptane (DTHP) and 1,5-dithiacyclooctane (DTCO). In the presence of DTHP and DTCO, the propagation rate coefficient, kp, of MMA was found to be 25% to 100% higher compared to bulk polymerisations under the same conditions. The significant increase of kp was explained by electron donation from the sulfur-containing solvents, which increased the reactivity of the macroradicals. MDOP had no observable effect on kp. The solvent influence on polymer tacticity was also studied using both 1H and 13C NMR spectroscopy. No significant influence of the solvent on polymer tacticity was found. © by Oldenbourg Wissenschaftsverlag, München.

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ID Code: 99105
Item Type: Journal Article
Refereed: Yes
Additional Information: Cited By :6
Export Date: 5 September 2016
Correspondence Address: Harrisson, S.; Center for Materials Innovation, Department of Chemistry, Washington University, St Louis, MO 63130, United States; email: simon@wuchem.wustl.edu
Chemicals/CAS: methacrylic acid methyl ester, 80-62-6; octane, 111-65-9; oxygen, 7782-44-7; sulfur, 13981-57-2, 7704-34-9
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Keywords: Free Radical Polymerization, Propagation Rate Coefficients, Solvent Effects, heptane derivative, methacrylic acid methyl ester, octane, oxygen, polymer, solvent, sulfur, article, chemical structure, electron, experimentation, kinetics, molecular weight, nuclear magnetic resonance spectroscopy, polymerization, proton nuclear magnetic resonance, synthesis
DOI: 10.1524/zpch.219.3.267.59184
ISSN: 09429352
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 22 Sep 2016 04:50
Last Modified: 22 Sep 2016 04:50

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