Synthesis of core-shell poly(divinylbenzene) microspheres via reversible addition fragmentation chain transfer graft polymerization of styrene

Barner, Leonie, Li, Chao'En, Hao, Xiaojuan, Stenzel, Martina H., Barner-Kowollik, Christopher, & Davis, Thomas P. (2004) Synthesis of core-shell poly(divinylbenzene) microspheres via reversible addition fragmentation chain transfer graft polymerization of styrene. Journal of Polymer Science Part A: Polymer Chemistry, 42(20), pp. 5067-5076.

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Abstract

Styrene has been grafted from crosslinked poly(divinylbenzene) core microspheres by both reversible addition fragmentation chain transfer (RAFT) polymerization and conventional free radical polymerization. The core microspheres were prepared by precipitation polymerization. Crosslinked poly(DVB) core microspheres containing double bonds on the particle surface can be used directly to graft polymers from the surface by RAFT without prior modification of the core microspheres. The RAFT agent 1-phenylethyl dithiobenzoate (PEDB) was used: Particle sizes increased from 2 mum up to 3.06 mum, and the particle weight increased by up to 6.5%. PEDB controls the particle weight gain, the particle volume, and the molecular weight of the soluble polymer. PEDB was also used to synthesize core poly(DVB) RAFT microspheres that contain residual RAFT end groups on the surface and within the particle. Styrene was subsequently grafted from the surface of these core poly(DVB) RAFT microspheres. The generated microspheres were characterized by H-1-NMR spectroscopy, focused ion beam (FIB) milling, Coulter particle sizing, and size exclusion chromatography. (C) 2004 Wiley Periodicals, Inc.

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ID Code: 97504
Item Type: Journal Article
Refereed: Yes
Keywords: core-shell microspheres; reversible addition fragmentation chain transfer; (RAFT) polymerization; particle size; focused ion beam (FIB) milling
DOI: 10.1002/pola.20328
ISSN: 1099-0518
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2004 Wiley Periodicals, Inc.
Deposited On: 28 Jul 2016 23:07
Last Modified: 28 Jul 2016 23:07

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