The reversible addition-fragmentation chain transfer process and the strength and limitations of modeling: Comment on "The magnitude of the fragmentation rate coefficient"

Barner-Kowollik, C., Coote, M. L., Davis, T. P., Radom, L., & Vana, P. (2003) The reversible addition-fragmentation chain transfer process and the strength and limitations of modeling: Comment on "The magnitude of the fragmentation rate coefficient". Journal of Polymer Science, Part A: Polymer Chemistry, 41(18).

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Abstract

There is appreciable uncertainty concerning the magnitude of the fragmentation rate coefficient of the intermediate radical in reversible addition-fragmentation chain transfer (RAFT) polymerizations. A large proportion of the experimental and theoretical evidence suggests that it is a stable species with a lifetime longer than 0.0001 s. This is particularly the case when the intermediate macro-RAFT radical is stabilized by a phenyl group attached to the radical center or has a poor leaving group. Although the occurrence to some extent of irreversible termination reactions cannot be excluded, we argue that such reactions are more likely to be a result of slow fragmentation of the intermediate macro-RAFT radical.

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142 citations in Web of Science®
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ID Code: 99067
Item Type: Journal Article
Refereed: Yes
Additional Information: Cited By :147
Export Date: 5 September 2016
CODEN: JPACE
Correspondence Address: Barner-Kowollik, C.; Centre Adv. Macromolecular Design, Sch. of Chem. Eng. and Indust. Chem., The University of New South Wales, Sydney, NSW 2052, Australia; email: camd@unsw.edu.au
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Keywords: Kinetics (polym.), Living free-radical polymerization, Modeling, Quantum chemistry, Reversible addition-fragmentation chain transfer (RAFT), Free radicals, Molecular weight, Organic compounds, Temperature, Fragmentation rate coefficient, Living free radical polymerization, Phenyl groups, Reversible addition-fragmentation chain transfer polymerizations, Polymerization, polymer
DOI: 10.1002/pola.10854
ISSN: 0887624X
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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