Article (Scientific journals)
Merging CO2‑based building blocks with cobalt-mediated radical polymerization for the synthesis of functional poly(vinyl alcohol)s
Scholten, Philip; Demarteau, Jérémy; Gennen, Sandro et al.
2018In Macromolecules, 51 (9), p. 3379-3393
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Keywords :
radical polymerization; cobalt-mediated radical polymerization (CMRP); supercritical carbon dioxide; vinyl alcohol; cyclic carbonate
Abstract :
[en] The use of CO2-based α-alkylidene cyclic carbonates in controlled radical polymerization has so far not been exploited, despite the fact that the cyclic carbonate ring offers a multitude of possible modifications. Herein, the synthesis of well-defined copolymers of vinyl acetate (VAc) and 4,4-dimethyl-5-methylene-1,3-dioxolan-2-one (DMMDO) using cobalt-mediated radical polymerization (CMRP) at 40 °C is reported. The controlled nature of the polymerization was confirmed while molecular weights of up to 25 000 g mol−1 and narrow dispersities (<1.4) were obtained. The copolymer structure was elucidated combining NMR, FT-IR, and MALDI-TOF analyses and consists of a polymer backbone with pendant carbonate rings. Further insights into the copolymer structure were gained through the monomers’ reactivity ratios, and a homogeneous distribution of the DMMDO monomer along the polymer chain was observed. A highly water-soluble poly(vinyl alcohol)-based copolymer was obtained by basic hydrolysis, whereas the chemoselective acidic hydrolysis of the acetate groups left the cyclic carbonate rings untouched, which were then exploited for further postmodification with amines. The precise copolymerization of VAc with CO2-sourced five-membered cyclic carbonates bearing an exomethylene moiety is therefore a powerful tool for the synthesis of new variants of poly(vinyl alcohol)-based copolymers.
Research center :
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 :
Scholten, Philip ;  University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM) > Karlsruhe Institute of Technology (KIT), Institute of Organic Chemistry (IOC), Germany
Demarteau, Jérémy ;  University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM)
Gennen, Sandro ;  University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM)
De Winter, Julien;  University of Mons, Organic Synthesis and Mass Spectrometry Laboratory, Belgium
Grignard, Bruno ;  University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM)
Debuigne, Antoine  ;  University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM)
Meier, Michael A. R.;  Karlsruhe Institute of Technology (KIT), Institute of Organic Chemistry (IOC), Germany
Detrembleur, Christophe ;  University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM)
Language :
English
Title :
Merging CO2‑based building blocks with cobalt-mediated radical polymerization for the synthesis of functional poly(vinyl alcohol)s
Publication date :
08 May 2018
Journal title :
Macromolecules
ISSN :
0024-9297
eISSN :
1520-5835
Publisher :
American Chemical Society, United States - District of Columbia
Volume :
51
Issue :
9
Pages :
3379-3393
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
https://pubs.acs.org/doi/10.1021/acs.macromol.8b00492
Funders :
The International Doctoral School in the frame of EJD-Funmat
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
FWO - Fonds Wetenschappelijk Onderzoek Vlaanderen [BE]
The "Excellence of Science" (EOS) Program
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
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