Sulfonation of Novel Fluorine-containing Poly(arylene ether nitrile)s for Polymer Electrolyte Membranes

Yoshimitsu Sakaguchi; Satoshi Takase; Kazushi Omote; Yoshinobu Asako; Kunio Kimura

doi:10.1080/10601325.2013.802497

Sulfonation of Novel Fluorine-containing Poly(arylene ether nitrile)s for Polymer Electrolyte Membranes

Yoshimitsu Sakaguchi, Satoshi Takase, Kazushi Omote, Yoshinobu Asako, Kunio Kimura

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Sulfonation reaction of fluorine-containing poly(arylene ether nitrile) derived from 4-phenoxy-2,3,5,6-tetrafluorobenzonitrile (PTFB) and 2,2-bis(4-hydroxyphenyl)-1,1,1,3,3,3-hexafluoropropane (6FBA) by concentrated sulfuric acid at 30°C yielded quantitative introduction of one sulfonic group into phenoxy ring in the polymer at para-position with 68 mol% and at meta-position with 32 mol% due to the influence of fluorines at the ortho-positions of adjacent benzene ring. Membrane properties of the resulting polymer, thermal stability, proton conductivity and water uptake, were investigated for the application in fuel cells. While the membrane derived from the polymer showed similar level of proton conductivity at humidified condition to NAFION®112, its dimensional stability based on water uptake was lower than that of NAFION®112.

Original language	English
Pages (from-to)	879-884
Number of pages	6
Journal	Journal of Macromolecular Science, Part A: Pure and Applied Chemistry
Volume	50
Issue number	8
DOIs	https://doi.org/10.1080/10601325.2013.802497
Publication status	Published - Jan 1 2013

Keywords

Fluorine-containing poly(arylene ether nitrile)
fuel cell
polymer electrolyte membrane
sulfonation

ASJC Scopus subject areas

Ceramics and Composites
Chemistry(all)
Polymers and Plastics
Materials Chemistry

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10.1080/10601325.2013.802497

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title = "Sulfonation of Novel Fluorine-containing Poly(arylene ether nitrile)s for Polymer Electrolyte Membranes",

abstract = "Sulfonation reaction of fluorine-containing poly(arylene ether nitrile) derived from 4-phenoxy-2,3,5,6-tetrafluorobenzonitrile (PTFB) and 2,2-bis(4-hydroxyphenyl)-1,1,1,3,3,3-hexafluoropropane (6FBA) by concentrated sulfuric acid at 30°C yielded quantitative introduction of one sulfonic group into phenoxy ring in the polymer at para-position with 68 mol% and at meta-position with 32 mol% due to the influence of fluorines at the ortho-positions of adjacent benzene ring. Membrane properties of the resulting polymer, thermal stability, proton conductivity and water uptake, were investigated for the application in fuel cells. While the membrane derived from the polymer showed similar level of proton conductivity at humidified condition to NAFION{\textregistered}112, its dimensional stability based on water uptake was lower than that of NAFION{\textregistered}112.",

keywords = "Fluorine-containing poly(arylene ether nitrile), fuel cell, polymer electrolyte membrane, sulfonation",

author = "Yoshimitsu Sakaguchi and Satoshi Takase and Kazushi Omote and Yoshinobu Asako and Kunio Kimura",

year = "2013",

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doi = "10.1080/10601325.2013.802497",

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T1 - Sulfonation of Novel Fluorine-containing Poly(arylene ether nitrile)s for Polymer Electrolyte Membranes

AU - Sakaguchi, Yoshimitsu

AU - Takase, Satoshi

AU - Omote, Kazushi

AU - Asako, Yoshinobu

AU - Kimura, Kunio

PY - 2013/1/1

Y1 - 2013/1/1

N2 - Sulfonation reaction of fluorine-containing poly(arylene ether nitrile) derived from 4-phenoxy-2,3,5,6-tetrafluorobenzonitrile (PTFB) and 2,2-bis(4-hydroxyphenyl)-1,1,1,3,3,3-hexafluoropropane (6FBA) by concentrated sulfuric acid at 30°C yielded quantitative introduction of one sulfonic group into phenoxy ring in the polymer at para-position with 68 mol% and at meta-position with 32 mol% due to the influence of fluorines at the ortho-positions of adjacent benzene ring. Membrane properties of the resulting polymer, thermal stability, proton conductivity and water uptake, were investigated for the application in fuel cells. While the membrane derived from the polymer showed similar level of proton conductivity at humidified condition to NAFION®112, its dimensional stability based on water uptake was lower than that of NAFION®112.

AB - Sulfonation reaction of fluorine-containing poly(arylene ether nitrile) derived from 4-phenoxy-2,3,5,6-tetrafluorobenzonitrile (PTFB) and 2,2-bis(4-hydroxyphenyl)-1,1,1,3,3,3-hexafluoropropane (6FBA) by concentrated sulfuric acid at 30°C yielded quantitative introduction of one sulfonic group into phenoxy ring in the polymer at para-position with 68 mol% and at meta-position with 32 mol% due to the influence of fluorines at the ortho-positions of adjacent benzene ring. Membrane properties of the resulting polymer, thermal stability, proton conductivity and water uptake, were investigated for the application in fuel cells. While the membrane derived from the polymer showed similar level of proton conductivity at humidified condition to NAFION®112, its dimensional stability based on water uptake was lower than that of NAFION®112.

KW - Fluorine-containing poly(arylene ether nitrile)

KW - fuel cell

KW - polymer electrolyte membrane

KW - sulfonation

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ER -

Sulfonation of Novel Fluorine-containing Poly(arylene ether nitrile)s for Polymer Electrolyte Membranes

Abstract

Keywords

ASJC Scopus subject areas

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