The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Mechanism and Kinetics of RAFT-Based Living Radical Polymerizations of Styrene and Methyl Methacrylate
Abstract
The bulk polymerizations of styrene and methyl methacrylate in the presence of model polymer−dithiocarbonate adducts as mediators and benzoyl peroxide (BPO) as a conventional initiator were kinetically studied. The polymerization rate, and hence the concentration of polymer radical P •, was proportional to [BPO] 1/2 . The pseudo-first-order activation rate constants k act were determined by the GPC peak-resolution and the polydispersity-analysis methods. The results showed that k act is directly proportional to [P • ], indicating that reversible addition−fragmentation chain transfer (RAFT) is the only important mechanism of activation. The magnitude of the exchange rate constant k ex (= k act /[P • ]) was strongly dependent on both the structures of the dithiocarbonate group and the polymer. The k ex values for the three RAFT systems examined in this work were all very large, which explains why these systems can provide low-polydispersity polymers from an early stage of polymerization. The activation energy of k ex for a polystyryl dithioacetate (PSt−SCSCH 3 ) was 21.0 kJ mol -1, which is reasonable for a fast addition reaction.
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Cites
Chong, ). Y. K., Le, T. P. T., Moad, G., Rizzardo, E., & Thang, S. H. (1999) · Macromolecules · doi:10.1021/ma981472p · Cited by 850
Self-citation
Cited by
Radical addition–fragmentation chemistry in polymer synthesis
Moad, G., Rizzardo, E., & Thang, S. H. (2008) · Polymer · doi:10.1016/j.polymer.2007.11.020 · Cited by 1,397
Self-citationKinetics of living radical polymerization
Goto, A., & Fukuda, T. (2004) · Progress in Polymer Science · doi:10.1016/j.progpolymsci.2004.01.002 · Cited by 914
Self-citationChiefari, J., Mayadunne, R. T. A., Moad, C. L., Moad, G., Rizzardo, E., Postma, A., Melissa A. Skidmore, A., & Thang, S. H. (2003) · Macromolecules · doi:10.1021/ma020883+ · Cited by 608
Self-citationControlled/living radical polymerization in aqueous media: homogeneous and heterogeneous systems
Qiu, J., Charleux, B., & Matyjaszewski, K. (2001) · Progress in Polymer Science · doi:10.1016/s0079-6700(01)00033-8 · Cited by 595
Tsujii, Y., Ejaz, M., Sato, K., Goto, A., & Fukuda, T. (2001) · Macromolecules · doi:10.1021/ma010733j · Cited by 310
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Metadata
- Authors
- Goto, A., Sato, K., Tsujii, Y., Fukuda, T., Moad, G., Rizzardo, E., & Thang, S. H.
- Venue
- Macromolecules
- Publisher
- American Chemical Society (ACS)
- Published
- 2001-01-01
- Volume
- 34
- Issue
- 3
- Pages
- 402-408
- ISSN
- 0024-9297 (ISSN-L)
- 1520-5835
- OpenAlex
- W2040870219
- Cited by
- 328
- References
- 1
- FWCI
- 17.92
- Type
- journal article
- Language
- en
- Open access
- closed
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