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Poly(tetrafluorostyrenephosphonic acid) - polysulfone block copolymers and membranes

Shao, Zhecheng LU ; Sannigrahi, Arindam LU and Jannasch, Patric LU (2013) In Journal of Polymer Science. Part A, Polymer Chemistry 51(21). p.4657-4666
Abstract
A series of ionic ABA triblock copolymers having a central polysulfone (PSU) central block and poly(2,3,5,6,-tetrafluorostyrene-4-phosphonic acid) (PTFSPA) outer blocks with different lengths were prepared and studied as electrolyte membranes. PSU with terminal benzyl chloride groups was used as a bifunctional macroinitiator for the formation of poly(2,3,4,5,6-pentafluorostyrene) (PPFS) blocks by atom transfer radical polymerization (ATRP). Selective and complete phosphonation of the PPFS blocks was achieved via a Michaelis-Arbuzov reaction using tris(trimethylsilyl)phosphite at 170 °C. Copolymer films were cast from solution and subsequently fully hydrolyzed to produce transparent flexible proton conducting PTFSPA-b-PSU-b-PTFSPA membranes... (More)
A series of ionic ABA triblock copolymers having a central polysulfone (PSU) central block and poly(2,3,5,6,-tetrafluorostyrene-4-phosphonic acid) (PTFSPA) outer blocks with different lengths were prepared and studied as electrolyte membranes. PSU with terminal benzyl chloride groups was used as a bifunctional macroinitiator for the formation of poly(2,3,4,5,6-pentafluorostyrene) (PPFS) blocks by atom transfer radical polymerization (ATRP). Selective and complete phosphonation of the PPFS blocks was achieved via a Michaelis-Arbuzov reaction using tris(trimethylsilyl)phosphite at 170 °C. Copolymer films were cast from solution and subsequently fully hydrolyzed to produce transparent flexible proton conducting PTFSPA-b-PSU-b-PTFSPA membranes with a thermal stability reaching above 270 °C under air, and increasing with the PTFSPA content. Studies of thin copolymer electrolyte membranes by tapping mode atomic force microscopy showed phase separated morphologies with continuous proton conducting PTFSPA nano scale domains. Block copolymer membranes reached a proton conductivity of 0.08 S cm-1 at 120 °C under fully hydrated conditions, and 0.8 mS cm-1 under 50% relative humidity at 80 °C. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
atom transfer radical polymerization (ATRP), polystyrene, ionomers, proton-exchange membrane fuel cells, phosphonation
in
Journal of Polymer Science. Part A, Polymer Chemistry
volume
51
issue
21
pages
4657 - 4666
publisher
John Wiley & Sons
external identifiers
  • wos:000325090000021
  • scopus:84884823036
ISSN
0887-624X
DOI
10.1002/pola.26887
language
English
LU publication?
yes
id
a24e3e72-976f-402b-a665-3da5e26a3292 (old id 3561029)
alternative location
http://onlinelibrary.wiley.com/doi/10.1002/pola.26887/abstract
date added to LUP
2013-08-20 15:49:44
date last changed
2019-07-02 01:11:09
@article{a24e3e72-976f-402b-a665-3da5e26a3292,
  abstract     = {A series of ionic ABA triblock copolymers having a central polysulfone (PSU) central block and poly(2,3,5,6,-tetrafluorostyrene-4-phosphonic acid) (PTFSPA) outer blocks with different lengths were prepared and studied as electrolyte membranes. PSU with terminal benzyl chloride groups was used as a bifunctional macroinitiator for the formation of poly(2,3,4,5,6-pentafluorostyrene) (PPFS) blocks by atom transfer radical polymerization (ATRP). Selective and complete phosphonation of the PPFS blocks was achieved via a Michaelis-Arbuzov reaction using tris(trimethylsilyl)phosphite at 170 °C. Copolymer films were cast from solution and subsequently fully hydrolyzed to produce transparent flexible proton conducting PTFSPA-b-PSU-b-PTFSPA membranes with a thermal stability reaching above 270 °C under air, and increasing with the PTFSPA content. Studies of thin copolymer electrolyte membranes by tapping mode atomic force microscopy showed phase separated morphologies with continuous proton conducting PTFSPA nano scale domains. Block copolymer membranes reached a proton conductivity of 0.08 S cm-1 at 120 °C under fully hydrated conditions, and 0.8 mS cm-1 under 50% relative humidity at 80 °C.},
  author       = {Shao, Zhecheng and Sannigrahi, Arindam and Jannasch, Patric},
  issn         = {0887-624X},
  keyword      = {atom transfer radical polymerization (ATRP),polystyrene,ionomers,proton-exchange membrane fuel cells,phosphonation},
  language     = {eng},
  number       = {21},
  pages        = {4657--4666},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Polymer Science. Part A, Polymer Chemistry},
  title        = {Poly(tetrafluorostyrenephosphonic acid) - polysulfone block copolymers and membranes},
  url          = {http://dx.doi.org/10.1002/pola.26887},
  volume       = {51},
  year         = {2013},
}