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Amphiphilic polymer gel electrolytes. I. Preparation of gels based on poly(ethylene oxide) graft copolymers containing different ionophobic groups

Gavelin, Patrik LU ; Jannasch, Patric LU and Wesslén, Bengt LU (2001) In Journal of Polymer Science. Part A, Polymer Chemistry 39(13). p.2223-2232
Abstract
Amphiphilic graft copolymers were prepared via the radical copolymerization of poly(ethylene oxide) (PEO) macromonomers with fluorocarbon or hydrocarbon acrylates in toluene with 2,2 ' -azobisisobutyronitrile (AIBN) as an initiator. H-1 NMR spectroscopy confirmed that the composition of the graft copolymers corresponded well to the monomer feed. For gel electrolytes prepared from the amphiphilic copolymers, the nature of the ionophobic parts of the amphiphilic graft copolymers had a great influence on the ion conductivity. Gel electrolytes based on graft copolymers containing fluorocarbon side chains showed significantly higher ion conductivity than electrolytes based on graft copolymers containing hydrocarbon groups. The... (More)
Amphiphilic graft copolymers were prepared via the radical copolymerization of poly(ethylene oxide) (PEO) macromonomers with fluorocarbon or hydrocarbon acrylates in toluene with 2,2 ' -azobisisobutyronitrile (AIBN) as an initiator. H-1 NMR spectroscopy confirmed that the composition of the graft copolymers corresponded well to the monomer feed. For gel electrolytes prepared from the amphiphilic copolymers, the nature of the ionophobic parts of the amphiphilic graft copolymers had a great influence on the ion conductivity. Gel electrolytes based on graft copolymers containing fluorocarbon side chains showed significantly higher ion conductivity than electrolytes based on graft copolymers containing hydrocarbon groups. The ambient-temperature ion conductivity was about 2.6 mS/cm at 20 degreesC for a gel electrolyte based on an amphiphilic graft copolymer consisting of an acrylate backbone carrying PEO and fluorocarbon side chains. Corresponding gels based on graft copolymers with PEO side chains and hydrocarbon groups showed an ambient-temperature ion conductivity of about 1.2 mS/cm. The gel electrolytes contained 30 wt % copolymer and 70 wt % 1 M LiPF6 in an ethylene carbonate/gamma -butyrolactone (2/1 w/w) mixture. (Less)
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organization
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Contribution to journal
publication status
published
subject
in
Journal of Polymer Science. Part A, Polymer Chemistry
volume
39
issue
13
pages
2223 - 2232
publisher
John Wiley & Sons
external identifiers
  • scopus:0035395246
ISSN
0887-624X
DOI
language
English
LU publication?
yes
id
12ff55cb-1d75-4874-9280-8d17b97a0546 (old id 150782)
date added to LUP
2007-07-13 11:49:56
date last changed
2018-05-29 10:14:07
@article{12ff55cb-1d75-4874-9280-8d17b97a0546,
  abstract     = {Amphiphilic graft copolymers were prepared via the radical copolymerization of poly(ethylene oxide) (PEO) macromonomers with fluorocarbon or hydrocarbon acrylates in toluene with 2,2 ' -azobisisobutyronitrile (AIBN) as an initiator. H-1 NMR spectroscopy confirmed that the composition of the graft copolymers corresponded well to the monomer feed. For gel electrolytes prepared from the amphiphilic copolymers, the nature of the ionophobic parts of the amphiphilic graft copolymers had a great influence on the ion conductivity. Gel electrolytes based on graft copolymers containing fluorocarbon side chains showed significantly higher ion conductivity than electrolytes based on graft copolymers containing hydrocarbon groups. The ambient-temperature ion conductivity was about 2.6 mS/cm at 20 degreesC for a gel electrolyte based on an amphiphilic graft copolymer consisting of an acrylate backbone carrying PEO and fluorocarbon side chains. Corresponding gels based on graft copolymers with PEO side chains and hydrocarbon groups showed an ambient-temperature ion conductivity of about 1.2 mS/cm. The gel electrolytes contained 30 wt % copolymer and 70 wt % 1 M LiPF6 in an ethylene carbonate/gamma -butyrolactone (2/1 w/w) mixture.},
  author       = {Gavelin, Patrik and Jannasch, Patric and Wesslén, Bengt},
  issn         = {0887-624X},
  language     = {eng},
  number       = {13},
  pages        = {2223--2232},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Polymer Science. Part A, Polymer Chemistry},
  title        = {Amphiphilic polymer gel electrolytes. I. Preparation of gels based on poly(ethylene oxide) graft copolymers containing different ionophobic groups},
  url          = {http://dx.doi.org/},
  volume       = {39},
  year         = {2001},
}