TY - JOUR
T1 - Effect of ammonium groups on the properties and alkaline stability of poly(arylene ether)-based anion exchange membranes
AU - Miyake, Junpei
AU - Fukasawa, Keita
AU - Watanabe, Masahiro
AU - Miyatake, Kenji
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2014/2/1
Y1 - 2014/2/1
N2 - Five kinds of ammonium groups functionalized partially fluorinated poly(arylene ether) block copolymer membranes were prepared for investigating the structure-property relationship as anion exchange membranes (AEMs). Consequently, the pyridine (PYR)-modified membrane showed the highest alkaline and hydrazine stability in terms of the conductivity, water uptake, and dry weight. The chloromethylated precursor block copolymers were reacted with amines, such as trimethylamine, N-butyldimethylamine, 1-methylimidazole, 1,2-dimethylimidazole, and PYR to provide the target quaternized poly(arylene ether)s. The structures of the polymers, as well as model compounds and oligomers were well characterized by 1H NMR spectra. The obtained AEMs were subjected to water uptake and hydroxide ion conductivity measurements and stabilities in aqueous alkaline and hydrazine media. The pyridinium-functionalized quaternized polymers membrane showed the highest alkaline and hydrazine stability with minor losses in the conductivity, water uptake, and dry weight. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014, 52, 383-389 Five kinds of ammonium groups (TMA, BDMA, MIm, DMIm, and PYR)-modified partially fluorinated poly(arylene ether) block copolymer membranes are synthesized to elucidate properties that include water uptake, hydroxide ion conductivity, stabilities in aqueous alkaline, and hydrazine media for anion exchange membrane fuel cell applications. The PYR-QPE membrane shows the highest alkaline and hydrazine stability in terms of the conductivity, water uptake, and dry weight.
AB - Five kinds of ammonium groups functionalized partially fluorinated poly(arylene ether) block copolymer membranes were prepared for investigating the structure-property relationship as anion exchange membranes (AEMs). Consequently, the pyridine (PYR)-modified membrane showed the highest alkaline and hydrazine stability in terms of the conductivity, water uptake, and dry weight. The chloromethylated precursor block copolymers were reacted with amines, such as trimethylamine, N-butyldimethylamine, 1-methylimidazole, 1,2-dimethylimidazole, and PYR to provide the target quaternized poly(arylene ether)s. The structures of the polymers, as well as model compounds and oligomers were well characterized by 1H NMR spectra. The obtained AEMs were subjected to water uptake and hydroxide ion conductivity measurements and stabilities in aqueous alkaline and hydrazine media. The pyridinium-functionalized quaternized polymers membrane showed the highest alkaline and hydrazine stability with minor losses in the conductivity, water uptake, and dry weight. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014, 52, 383-389 Five kinds of ammonium groups (TMA, BDMA, MIm, DMIm, and PYR)-modified partially fluorinated poly(arylene ether) block copolymer membranes are synthesized to elucidate properties that include water uptake, hydroxide ion conductivity, stabilities in aqueous alkaline, and hydrazine media for anion exchange membrane fuel cell applications. The PYR-QPE membrane shows the highest alkaline and hydrazine stability in terms of the conductivity, water uptake, and dry weight.
KW - block copolymers
KW - degradation
KW - membranes
KW - polycondensation
KW - polyelectrolytes
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U2 - 10.1002/pola.27011
DO - 10.1002/pola.27011
M3 - Article
AN - SCOPUS:84890787547
SN - 0887-624X
VL - 52
SP - 383
EP - 389
JO - Journal of Polymer Science, Part A: Polymer Chemistry
JF - Journal of Polymer Science, Part A: Polymer Chemistry
IS - 3
ER -