Thioketone-mediated polymerization of butyl acrylate: Controlling free-radical polymerization via a dormant radical species

Junkers, T., Stenzel, M. H., Davis, T. P., & Barner-Kowollik, C. (2007) Thioketone-mediated polymerization of butyl acrylate: Controlling free-radical polymerization via a dormant radical species. Macromolecular Rapid Communications, 28(6).

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It is demonstrated by experiment and simulation that the commercially available thioketone 4,4-bis(dimethylamino)thiobenzophenone is capable of controlling AIBN-initiated bulk butyl acrylate polymerization at 80°C. On the basis of molecular weight data and from monomer onversion versus time curves, the associated rate parameters are estimated. The addition rate coefficient, kad, for the reaction of a propagating chain with the thioketone is close to 106 L · mol-1 · s-1 -1 and the fragmentation rate coefficient, kfrag, is around 10-2 s-1 giving rise to large equilibrium constants in the order of 108 L · mol-1. Furthermore, cross-and self-termination of the dormant radical species are identified to be operational. © 2007 WILEY-VCH Verlag GmbH & Co. KGaA.

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ID Code: 99151
Item Type: Journal Article
Refereed: Yes
Additional Information: Cited By :26
Export Date: 5 September 2016
Correspondence Address: Barner-Kowollik, C.; Centre for Advanced Macromolecular Design, School of Chemical Sciences and Engineering, University of New South Wales, Sydney, NSW 2052, Australia; email:
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Keywords: Kinetics (polym.), Living/controlled free radical polymerization, Molecular weight distribution, Thioketone mediated polymerization (TKMP), Free radical polymerization, Molecular weight, Monomers, Parameter estimation, Butyl acrylates, Molecular weight distributions, Rate coefficients, Ketones
DOI: 10.1002/marc.200600885
ISSN: 10221336
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: 12 Oct 2016 05:12

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