Imidazolium-functionalized poly(arylene ether sulfone) block copolymer as an anion exchange membrane for alkaline fuel cell

Anil H.N. Rao; Roshni Lilly Thankamony; Hyoung Juhn Kim; Sukwoo Nam; Tae Hyun Kim

doi:10.1016/j.polymer.2012.11.023

Imidazolium-functionalized poly(arylene ether sulfone) block copolymer as an anion exchange membrane for alkaline fuel cell

Anil H.N. Rao, Roshni Lilly Thankamony, Hyoung Juhn Kim, Sukwoo Nam, Tae Hyun Kim

GREEN SCHOOL (Graduate School of Energy and Environment)

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

108 Citations (Scopus)

Abstract

An ethyl imidazolium-functionalized poly(arylene ether sulfone) (EI-PES) block copolymer was prepared as a novel anion exchange membrane. The EI-PES polymer was synthesized by polycondensation between the F- and OH-terminated oligomers, followed by benzylic bromination and imidazolium functionalization (homogeneous functionalization). The quaternary ammonium-functionalized PES (QA-PES) was also prepared by heterogeneous functionalization, and the properties were compared with EI-PES. The membrane obtained from EI-PES showed a well-defined phase separated morphology between hydrophobic and hydrophilic ionic units of the block copolymer. An IEC of 1.45 meq/g with hydroxide conductivity of 0.03 S/cm at r.t. was observed for EI-PES. The EI-PES membrane also displayed excellent dimensional, thermal, mechanical and chemical stabilities.

Original language	English
Pages (from-to)	111-119
Number of pages	9
Journal	Polymer
Volume	54
Issue number	1
DOIs	https://doi.org/10.1016/j.polymer.2012.11.023
Publication status	Published - 2013 Jan 8

Bibliographical note

Funding Information:
This work was supported by a National Research Foundation of Korea (NRF) grant, funded by the Korean government (MEST) ( 2011-0022859 ). Part of this work was also supported by a research grant from the Korea Institute of Science and Technology as a part of the “E-BANK” program in 2012.

Keywords

Anion exchange membrane
Block copolymer
Imidazolium-functionalized polymer

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Materials Chemistry

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10.1016/j.polymer.2012.11.023

Cite this

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title = "Imidazolium-functionalized poly(arylene ether sulfone) block copolymer as an anion exchange membrane for alkaline fuel cell",

abstract = "An ethyl imidazolium-functionalized poly(arylene ether sulfone) (EI-PES) block copolymer was prepared as a novel anion exchange membrane. The EI-PES polymer was synthesized by polycondensation between the F- and OH-terminated oligomers, followed by benzylic bromination and imidazolium functionalization (homogeneous functionalization). The quaternary ammonium-functionalized PES (QA-PES) was also prepared by heterogeneous functionalization, and the properties were compared with EI-PES. The membrane obtained from EI-PES showed a well-defined phase separated morphology between hydrophobic and hydrophilic ionic units of the block copolymer. An IEC of 1.45 meq/g with hydroxide conductivity of 0.03 S/cm at r.t. was observed for EI-PES. The EI-PES membrane also displayed excellent dimensional, thermal, mechanical and chemical stabilities.",

keywords = "Anion exchange membrane, Block copolymer, Imidazolium-functionalized polymer",

author = "Rao, {Anil H.N.} and Thankamony, {Roshni Lilly} and Kim, {Hyoung Juhn} and Sukwoo Nam and Kim, {Tae Hyun}",

note = "Funding Information: This work was supported by a National Research Foundation of Korea (NRF) grant, funded by the Korean government (MEST) ( 2011-0022859 ). Part of this work was also supported by a research grant from the Korea Institute of Science and Technology as a part of the “E-BANK” program in 2012. ",

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doi = "10.1016/j.polymer.2012.11.023",

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AU - Rao, Anil H.N.

AU - Thankamony, Roshni Lilly

AU - Kim, Hyoung Juhn

AU - Nam, Sukwoo

AU - Kim, Tae Hyun

N1 - Funding Information: This work was supported by a National Research Foundation of Korea (NRF) grant, funded by the Korean government (MEST) ( 2011-0022859 ). Part of this work was also supported by a research grant from the Korea Institute of Science and Technology as a part of the “E-BANK” program in 2012.

PY - 2013/1/8

Y1 - 2013/1/8

N2 - An ethyl imidazolium-functionalized poly(arylene ether sulfone) (EI-PES) block copolymer was prepared as a novel anion exchange membrane. The EI-PES polymer was synthesized by polycondensation between the F- and OH-terminated oligomers, followed by benzylic bromination and imidazolium functionalization (homogeneous functionalization). The quaternary ammonium-functionalized PES (QA-PES) was also prepared by heterogeneous functionalization, and the properties were compared with EI-PES. The membrane obtained from EI-PES showed a well-defined phase separated morphology between hydrophobic and hydrophilic ionic units of the block copolymer. An IEC of 1.45 meq/g with hydroxide conductivity of 0.03 S/cm at r.t. was observed for EI-PES. The EI-PES membrane also displayed excellent dimensional, thermal, mechanical and chemical stabilities.

AB - An ethyl imidazolium-functionalized poly(arylene ether sulfone) (EI-PES) block copolymer was prepared as a novel anion exchange membrane. The EI-PES polymer was synthesized by polycondensation between the F- and OH-terminated oligomers, followed by benzylic bromination and imidazolium functionalization (homogeneous functionalization). The quaternary ammonium-functionalized PES (QA-PES) was also prepared by heterogeneous functionalization, and the properties were compared with EI-PES. The membrane obtained from EI-PES showed a well-defined phase separated morphology between hydrophobic and hydrophilic ionic units of the block copolymer. An IEC of 1.45 meq/g with hydroxide conductivity of 0.03 S/cm at r.t. was observed for EI-PES. The EI-PES membrane also displayed excellent dimensional, thermal, mechanical and chemical stabilities.

KW - Anion exchange membrane

KW - Block copolymer

KW - Imidazolium-functionalized polymer

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JO - Polymer

JF - Polymer

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Imidazolium-functionalized poly(arylene ether sulfone) block copolymer as an anion exchange membrane for alkaline fuel cell

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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