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Polymer electrolyte membranes by in situ polymerization of poly(ethylene carbonate-co-ethylene oxide) macromonomers in blends with poly(vinylidene fluoride-co-hexafluoropropylene)

Munch Elmér, Anette LU and Jannasch, Patric LU (2007) In Journal of Polymer Science. Part B, Polymer Physics 45(1). p.79-90
Abstract
Salt-containing membranes based on polymethacrylates having poly(ethylene carbonate-co-ethylene oxide) side chains, as well as their blends with poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP), have been studied. Self-supportive ion conductive membranes were prepared by casting films of methacrylate functional poly(ethylene carbonate-co-ethylene oxide) macromonomers containing lithium bis(trifluorosulfonyl)imide (LiTFSI) salt, followed by irradiation with UV-light to polymerize the methacrylate units in situ. Homogenous electrolyte membranes based on the polymerized macromonomers showed a conductivity of 6.3 × 10-6 S cm-1 at 20 °C. The preparation of polymer blends, by the addition of PVDF-HFP to the electrolytes, was found to... (More)
Salt-containing membranes based on polymethacrylates having poly(ethylene carbonate-co-ethylene oxide) side chains, as well as their blends with poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP), have been studied. Self-supportive ion conductive membranes were prepared by casting films of methacrylate functional poly(ethylene carbonate-co-ethylene oxide) macromonomers containing lithium bis(trifluorosulfonyl)imide (LiTFSI) salt, followed by irradiation with UV-light to polymerize the methacrylate units in situ. Homogenous electrolyte membranes based on the polymerized macromonomers showed a conductivity of 6.3 × 10-6 S cm-1 at 20 °C. The preparation of polymer blends, by the addition of PVDF-HFP to the electrolytes, was found to greatly improve the mechanical properties. However, the addition led to an increase of the glass transition temperature (Tg) of the ion conductive phase by 5 °C. The conductivity of the blend membranes was thus lower in relation to the corresponding homogeneous polymer electrolytes, and 2.5 × 10-6 S cm-1 was recorded for a membrane containing 10 wt % PVDF-HFP at 20 °C. Increasing the salt concentration in the blend membranes was found to increase the Tg of the ion conductive component and decrease the propensity for the crystallization of the PVDF-HFP component. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
solid polymer electrolytes, poly(vinylidene fluoride-co-hexafluoropropylene), polycarbonates, heterogeneous blends
in
Journal of Polymer Science. Part B, Polymer Physics
volume
45
issue
1
pages
79 - 90
publisher
John Wiley & Sons
external identifiers
  • wos:000242873200008
  • scopus:33846320840
ISSN
0887-6266
DOI
10.1002/polb.20980
language
English
LU publication?
yes
id
879b6495-de3f-4c6f-ab83-7cd4fe69ba27 (old id 162958)
date added to LUP
2007-07-13 14:45:51
date last changed
2017-01-01 06:45:10
@article{879b6495-de3f-4c6f-ab83-7cd4fe69ba27,
  abstract     = {Salt-containing membranes based on polymethacrylates having poly(ethylene carbonate-co-ethylene oxide) side chains, as well as their blends with poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP), have been studied. Self-supportive ion conductive membranes were prepared by casting films of methacrylate functional poly(ethylene carbonate-co-ethylene oxide) macromonomers containing lithium bis(trifluorosulfonyl)imide (LiTFSI) salt, followed by irradiation with UV-light to polymerize the methacrylate units in situ. Homogenous electrolyte membranes based on the polymerized macromonomers showed a conductivity of 6.3 × 10-6 S cm-1 at 20 °C. The preparation of polymer blends, by the addition of PVDF-HFP to the electrolytes, was found to greatly improve the mechanical properties. However, the addition led to an increase of the glass transition temperature (Tg) of the ion conductive phase by 5 °C. The conductivity of the blend membranes was thus lower in relation to the corresponding homogeneous polymer electrolytes, and 2.5 × 10-6 S cm-1 was recorded for a membrane containing 10 wt % PVDF-HFP at 20 °C. Increasing the salt concentration in the blend membranes was found to increase the Tg of the ion conductive component and decrease the propensity for the crystallization of the PVDF-HFP component.},
  author       = {Munch Elmér, Anette and Jannasch, Patric},
  issn         = {0887-6266},
  keyword      = {solid polymer electrolytes,poly(vinylidene fluoride-co-hexafluoropropylene),polycarbonates,heterogeneous blends},
  language     = {eng},
  number       = {1},
  pages        = {79--90},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Polymer Science. Part B, Polymer Physics},
  title        = {Polymer electrolyte membranes by in situ polymerization of poly(ethylene carbonate-co-ethylene oxide) macromonomers in blends with poly(vinylidene fluoride-co-hexafluoropropylene)},
  url          = {http://dx.doi.org/10.1002/polb.20980},
  volume       = {45},
  year         = {2007},
}