Reference : Cobalt-mediated radical (co)polymerization of vinyl chloride and vinyl acetate
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/129767
Cobalt-mediated radical (co)polymerization of vinyl chloride and vinyl acetate
English
Piette, Yasmine [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Debuigne, Antoine mailto [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Jérôme, Christine mailto [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Bodart, Vincent [Solvin SA > > > >]
Poli, Rinaldo [Université de Toulouse et Institut Universitaire de France > > (Laboratoire de Chimie de Coordination (Toulouse) > >]
Detrembleur, Christophe mailto [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Oct-2012
Polymer Chemistry
Royal Society Chemistry
3
10
2880-2891
Yes (verified by ORBi)
International
1759-9954
Cambridge
United Kingdom
[en] radical polymerization ; cobalt-mediated radical polymerization (CMRP) ; vinyl acetate ; vinyl chloride
[en] The cobalt mediated radical polymerization (CMRP) of vinyl chloride (VC) in the presence of bis(acetylacetonato)cobalt(II) (Co(acac)2) as a controlling agent is presented for the first time. Using an alkyl-Co(III) compound (R0–(CH2–CHOAc)<4–Co(acac)2; R0 = (H3C)2(OCH3)C–CH2–C(CH3)(CN)–) as an initiator, the bulk polymerization under non-isotherm conditions is controlled. 1H NMR spectra of the resulting PVC show that the CMRP process does not significantly affect the level of defects compared to a PVC prepared by a conventional free radical polymerization at the same temperature. Using the same alkyl-cobalt(III) compound, the copolymerization of VC and VAc is controlled at 40 °C provided that enough VAc (about 40 mol%) is present in the polymerization medium to moderate the VC polymerization. In line with reactivity ratios, VC is preferentially incorporated in the polymer at the early stages of the polymerization, leading to copolymers with a high VC content at moderate conversions. This is the first report of a CMRP of VC and of the synthesis of well-defined statistical PVC-co-PVAc copolymers by this technique.
Center for Education and Research on Macromolecules (CERM)
Politique Scientifique Fédérale (Belgique) = Belgian Federal Science Policy ; Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS ; The French CNRS ; The IUF ; The "Agnece National de la Recherche"
Researchers
http://hdl.handle.net/2268/129767
10.1039/C2PY20413D
http://pubs.rsc.org/en/content/articlelanding/2012/py/c2py20413d

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