ORBi: Grignard Bruno - Dispersion Atom Transfer Radical Polymerization of vinyl monomers in supercritical carbon dioxide

Reference : Dispersion Atom Transfer Radical Polymerization of vinyl monomers in supercritical carbo...


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Chemistry Engineering, computing & technology : Materials science & engineering
	To cite this reference:	http://hdl.handle.net/2268/5741

Title :	Dispersion Atom Transfer Radical Polymerization of vinyl monomers in supercritical carbon dioxide
Language :	English
Author, co-author :	Grignard, Bruno [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
	Jérôme, Christine [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
	Calberg, Cédric [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
	Jérôme, Robert [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
	Wang, Wenxin [UniVersity of Nottingham, School of Chemistry, UK > > > >]
	Howdle, Steven M [UniVersity of Nottingham, School of Chemistry, UK > > > >]
	Detrembleur, Christophe [University of LIège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Publication date :	25-Nov-2008
Journal title :	Macromolecules
Publisher :	American Chemical Society
Volume :	41
Issue/season :	22
Pages :	8575-8563
Peer reviewed :	Yes (verified by ORBi)
Audience :	International
ISSN :	0024-9297
City :	Washington
Country :	DC
Keywords :	[en] green technology ; supercritical carbon dioxide ; radical polymerization ; atom transfer radical polymerization (ATRP)
Abstract :	[en] Controlled dispersion atom transfer radical polymerization (ATRP) of methyl methacrylate (MMA) was successfully carried out in supercritical carbon dioxide in the presence of aminated fluoropolymers. These materials played the dual role of macroligand for the copper bromide and also steric stabilizer to support formation of polymer microspheres. The livingness of the PMMA beads was confirmed by the one-pot two-step PMMA chain extension and the synthesis of poly(methyl methacrylate)-b-poly(2,2,2-trifluoroethyl methacrylate) (PMMA-b-PFMA) diblock copolymer in scCO2. Successful activator generated by electron transfer (AGET) for ATRP of MMA, using tin ethylhexanoate as a reducing agent, is also discussed, and the concept of dispersion ATRP of MMA was successfully extended to the controlled dispersion polymerization of styrene by ATRP leading to the formation of PS microparticles. Finally, due to the high solubility of the catalyst in scCO2, the purification of PMMA was investigated by supercritical fluid extraction, leading to the preparation of PMMA beads with low residual catalyst traces.
Research units :	Center for Education and Research on Macromolecules (CERM)
Funders :	Politique Scientifique Fédérale (Belgique) = Belgian Federal Science Policy ; Fonds pour la formation à la Recherche dans l'Industrie et dans l'Agriculture (Communauté française de Belgique) - FRIA ; Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS ; The Région Wallone in the frame of the Corronet project
Target :	Researchers
Permalink :	http://hdl.handle.net/2268/5741
DOI :	10.1021/ma801474s
Other URL :	http://pubs.acs.org/doi/pdf/10.1021/ma801474s

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