[en] The organometallic-mediated radical polymerization (OMRP) of vinyl acetate (VAc) and its OMR copolymerization (OMRcoP) with tert-butyl 2-trifluoromethylacrylate (MAF-TBE) mediated by Co(SAL)2 (SAL = 2-formylphenolato or deprotonated salicylaldehyde) produced relatively well-defined PVAc and poly(VAc-alt-MAF-TBE) copolymers at moderate temperature (<40 ◦C) in bulk. The resulting alternating copolymer was characterized by 1H-, 13C- and 19F-nuclear magnetic resonance (NMR) spectroscopies, and by size exclusion chromatography. The linear first-order kinetic plot, the linear evolutions of the molar mass with total monomer conversion, and the relatively low dispersity (Đ~1.55) of the resulting copolymers suggest that this cobalt complex provides some degree of control over the copolymerization of VAc and MAF-TBE. Compared to the previously investigated cobalt complex OMRP mediators having a fully oxygen-based first coordination sphere, this study emphasizes a few peculiarities of Co(SAL)2: a lower ability to trap radical chains as compared to Co(acac)2 and the absence of catalytic chain transfer reactions, which dominates polymerizations carried in the presence of 9-oxyphenalenone cobalt derivative.
Research Center/Unit :
CESAM Complex and Entangled Systems from Atoms to Materials (CESAM) Center for Education and Research on Macromolecules (CERM)
Disciplines :
Chemistry Materials science & engineering
Author, co-author :
Banerjee, Sanjib; Institut Charles Gerhardt, Ingénierie et Architectures Macromoléculaires, Montpellier, France
Bellan, Ekaterina V.; University of Toulouse, CNRS, Laboratoire de Chimie de Coordination, France
Gayet, Florence; University of Toulouse, CNRS, Laboratoire de Chimie de Coordination, France
Debuigne, Antoine ; University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM)
Detrembleur, Christophe ; University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM)
Poli, Rinaldo; University of Toulouse, CNRS, Laboratoire de Chimie de Coordination, France > Institut Universitaire de France, Paris, France
Améduri, Bruno; Institut Charles Gerhardt, Ingénierie et Architectures Macromoléculaires, Montpellier, France
Ladmiral, Vincent; Institut Charles Gerhardt, Ingénierie et Architectures Macromoléculaires, Montpellier, France
Language :
English
Title :
Bis(formylphenolato)cobalt(II)-mediated alternating radical copolymerization of tert-butyl 2-trifluoromethylacrylate with vinyl acetate
Publication date :
December 2017
Journal title :
Polymers
ISSN :
2073-4360
Publisher :
MDPI Publishing, Basel, Switzerland
Volume :
9
Issue :
12
Pages :
705
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique ANR - Agence Nationale de la Recherche
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