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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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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 and Sons
external identifiers
  • wos:000325090000021
  • scopus:84884823036
ISSN
0887-624X
DOI
10.1002/pola.26887
language
English
LU publication?
yes
additional info
The research leading to these results has received funding from the European Community’s Seventh Framework Programme (FP7/2010–2013) under the call ENERGY-2010-10.2-1: Future Emerging Technologies for Energy Applications (FET) under contract 256821 QuasiDry. Article first published online 19 August 2013.
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
2016-04-01 10:15:25
date last changed
2021-01-06 06:14:50
@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},
  language     = {eng},
  number       = {21},
  pages        = {4657--4666},
  publisher    = {John Wiley and 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},
  doi          = {10.1002/pola.26887},
  volume       = {51},
  year         = {2013},
}