[en] The synthesis of ethylene-based block copolymers (BCPs) by using a single radical polymerization technique is attractive but remains to be a great challenge. The main difficulty relates to the difference in reactivity between ethylene and the comonomer, especially if polar vinyl monomers are considered. The present work explores the radical polymerization of ethylene via organometallic-mediated radical polymerization (OMRP) with the aim of overcoming this limitation. First, some organocobalt complexes demonstrated their ability to initiate the radical homopolymerization of ethylene. The molecular parameters of polyethylene (PE) were found to be dependent on the reaction conditions (solvent and temperature), but at this stage, data do not allow claiming the controlled character of this polymerization. Nonetheless, proper selection of the organocobalt complex initiator led to unique α-functional PE. Finally, BCPs composed of ethylene and polar vinyl monomers, for example, poly(vinyl acetate)-b-polyethylene (PVAc-b-PE) and poly(ethylene vinyl acetate)-b-polyethylene (EVA-b-PE), were prepared for the first time using cobalt-terminated polymers as macroinitiators. In this case, some triblock copolymers were also formed by radical coupling reactions during ethylene polymerization. Overall, this strategy is straightforward for preparing PE-based copolymers by using a single organocobalt complex.
Research Center/Unit :
Center for Education and Research on Macromolecules (CERM) CESAM - Complex and Entangled Systems from Atoms to Materials - ULiège
Disciplines :
Chemistry Materials science & engineering
Author, co-author :
Demarteau, Jérémy; University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM) Research Unit, Center for Education and Research on Macromolecules (CERM), Belgium
Scholten, Philip ; University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM) Research Unit, Center for Education and Research on Macromolecules (CERM), Belgium > Karlsruhe Institute of Technology (KIT), Institute of Organic Chemistry (IOC), Germany
Kermagoret, Anthony ; University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM) Research Unit, Center for Education and Research on Macromolecules (CERM), Belgium
De Winter, Julien; University of Mons, Organic Synthesis and Mass Spectrometry Laboratory, Belgium
Meier, Michael A.; Karlsruhe Institute of Technology (KIT), Institute of Organic Chemistry (IOC), Germany
Monteil, Vincent; Université de Lyon, Université Lyon 1, Laboratoire C2P2, Équipe LCPP, France
Debuigne, Antoine ; University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM) Research Unit, Center for Education and Research on Macromolecules (CERM), Belgium
Detrembleur, Christophe ; University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM) Research Unit, Center for Education and Research on Macromolecules (CERM), Belgium
Language :
English
Title :
Functional polyethylene (PE) and PE-basedl block copolymers by organometallic-mediated radical polymerization
Publication date :
26 November 2019
Journal title :
Macromolecules
ISSN :
0024-9297
eISSN :
1520-5835
Publisher :
American Chemical Society (ACS), United States - District of Columbia
Volume :
52
Issue :
22
Pages :
9053-9063
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture European Joint Doctorate (EJD) - Funmat
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