Synthesis of star polymers using RAFT polymerization: What is possible?

Barner-Kowollik, C., Davis, T. P., & Stenzel, M. H. (2006) Synthesis of star polymers using RAFT polymerization: What is possible? Australian Journal of Chemistry, 59(10).

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Abstract

Various pathways to generate star polymers using reversible addition?fragmentation transfer (RAFT) are discussed. Similar to other polymerization techniques, star polymers can be generated using arm-first and core-first approaches. Unique to the RAFT process is the subdivision of the core-first approach into the R-group and Z-group approaches, depending on the attachment of the RAFT agent to the multifunctional core. The mechanism of the R- and Z-group approaches are discussed in detail and it is shown that both techniques have to overcome difficulties arising from termination reactions. Termination reactions were found to broaden the molecular weight. However, these side reactions can be limited by careful design of the synthesis. Considerations include RAFT and radical concentration, number of arms, type of RAFT agent and monomer. Despite obvious challenges, the RAFT process is highly versatile, allowing the synthesis of novel polymer architectures such as poly(vinyl acetate) and poly(vinyl pyrrolidone) star polymers. © CSIRO 2006.

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ID Code: 99118
Item Type: Journal Article
Refereed: Yes
Additional Information: Cited By :81
Export Date: 5 September 2016
CODEN: AJCHA
Correspondence Address: Stenzel, M.H.; Centre for Advanced Macromolecular Design, School of Chemical Sciences and Engineering, University of New South Wales, Sydney, NSW 2052, Australia; email: camd@unsw.edu.au
Keywords: Free radicals, Molecular weight, Polymerization, Polyvinyl acetates, Reaction kinetics, Synthesis (chemical), Radical concentration, Reversible addition fragmentation transfer (RAFT), Star polymers, Termination reactions, Organic polymers
DOI: 10.1071/CH06297
ISSN: 00049425
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: 25 Oct 2016 23:41

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