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Block copolymers combining semi-fluorinated poly(arylene ether) and sulfonated poly(arylene ether sulfone) segments for proton exchange membranes

Sannigrahi, Arindam LU ; Takamuku, Shogo LU and Jannasch, Patric LU (2014) In International Journal of Hydrogen Energy 39(28). p.15718-15727
Abstract
A series of aromatic multiblock copolymers based on alternating segments of hydrophilic sulfonated polysulfone (PSU) and hydrophobic polyfluoroether (PFE) were prepared and characterized as proton exchange membranes. PSU precursor blocks were synthesized by polycondensation of dichlorodiphenylsulfone and resorcinol, and PFE precursor blocks were prepared by combining decafluorobiphenyl and isopropylidenediphenol. After preparation of the multiblock copolymers via a mild coupling reaction of the precursor blocks, the resorcinol units of the PSU blocks were selectively and virtually completely sulfonated under mild reaction conditions using trimethylsilylchlorosulfonate. Transparent and robust membranes with different PSU-PFE copolymer... (More)
A series of aromatic multiblock copolymers based on alternating segments of hydrophilic sulfonated polysulfone (PSU) and hydrophobic polyfluoroether (PFE) were prepared and characterized as proton exchange membranes. PSU precursor blocks were synthesized by polycondensation of dichlorodiphenylsulfone and resorcinol, and PFE precursor blocks were prepared by combining decafluorobiphenyl and isopropylidenediphenol. After preparation of the multiblock copolymers via a mild coupling reaction of the precursor blocks, the resorcinol units of the PSU blocks were selectively and virtually completely sulfonated under mild reaction conditions using trimethylsilylchlorosulfonate. Transparent and robust membranes with different PSU-PFE copolymer compositions and ion-exchange capacities were cast from solution. Atomic force microscopy of the membranes revealed a distinct nanophase separated morphology. At 80 oC, the proton conductivity reached 10 mS cm-1 under 65% relative humidity and 100 mS cm-1 under fully hydrated conditions. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Sulfonation, Ionomer, Aromatic block copolymer, Polymer electrolyte membrane, Fuel cell, Proton conductivity
in
International Journal of Hydrogen Energy
volume
39
issue
28
pages
15718 - 15727
publisher
Elsevier
external identifiers
  • wos:000342861500045
  • scopus:84908242772
ISSN
1879-3487
DOI
10.1016/j.ijhydene.2014.07.155
language
English
LU publication?
yes
id
d25ddfb1-a409-47cc-843a-96f1893683a1 (old id 4580136)
alternative location
http://www.sciencedirect.com/science/article/pii/S0360319914022010
date added to LUP
2014-09-22 11:40:13
date last changed
2017-11-05 03:58:04
@article{d25ddfb1-a409-47cc-843a-96f1893683a1,
  abstract     = {A series of aromatic multiblock copolymers based on alternating segments of hydrophilic sulfonated polysulfone (PSU) and hydrophobic polyfluoroether (PFE) were prepared and characterized as proton exchange membranes. PSU precursor blocks were synthesized by polycondensation of dichlorodiphenylsulfone and resorcinol, and PFE precursor blocks were prepared by combining decafluorobiphenyl and isopropylidenediphenol. After preparation of the multiblock copolymers via a mild coupling reaction of the precursor blocks, the resorcinol units of the PSU blocks were selectively and virtually completely sulfonated under mild reaction conditions using trimethylsilylchlorosulfonate. Transparent and robust membranes with different PSU-PFE copolymer compositions and ion-exchange capacities were cast from solution. Atomic force microscopy of the membranes revealed a distinct nanophase separated morphology. At 80 oC, the proton conductivity reached 10 mS cm-1 under 65% relative humidity and 100 mS cm-1 under fully hydrated conditions.},
  author       = {Sannigrahi, Arindam and Takamuku, Shogo and Jannasch, Patric},
  issn         = {1879-3487},
  keyword      = {Sulfonation,Ionomer,Aromatic block copolymer,Polymer electrolyte membrane,Fuel cell,Proton conductivity},
  language     = {eng},
  number       = {28},
  pages        = {15718--15727},
  publisher    = {Elsevier},
  series       = {International Journal of Hydrogen Energy},
  title        = {Block copolymers combining semi-fluorinated poly(arylene ether) and sulfonated poly(arylene ether sulfone) segments for proton exchange membranes},
  url          = {http://dx.doi.org/10.1016/j.ijhydene.2014.07.155},
  volume       = {39},
  year         = {2014},
}