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

Research output: Contribution to journalArticle

89 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 languageEnglish
Pages (from-to)111-119
Number of pages9
JournalPolymer (United Kingdom)
Volume54
Issue number1
DOIs
Publication statusPublished - 2013 Jan 8
Externally publishedYes

Fingerprint

Alkaline fuel cells
Sulfones
Ether
Block copolymers
Anions
Ethers
Ion exchange
Negative ions
Membranes
Mechanical stability
Dimensional stability
Chemical stability
Polycondensation
Ammonium Compounds
Oligomers
Polymers
Thermodynamic stability

Keywords

  • Anion exchange membrane
  • Block copolymer
  • Imidazolium-functionalized polymer

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

Cite this

Imidazolium-functionalized poly(arylene ether sulfone) block copolymer as an anion exchange membrane for alkaline fuel cell. / Rao, Anil H N; Thankamony, Roshni Lilly; Kim, Hyoung Juhn; Nam, SukWoo; Kim, Tae Hyun.

In: Polymer (United Kingdom), Vol. 54, No. 1, 08.01.2013, p. 111-119.

Research output: Contribution to journalArticle

Rao, Anil H N ; Thankamony, Roshni Lilly ; Kim, Hyoung Juhn ; Nam, SukWoo ; Kim, Tae Hyun. / Imidazolium-functionalized poly(arylene ether sulfone) block copolymer as an anion exchange membrane for alkaline fuel cell. In: Polymer (United Kingdom). 2013 ; Vol. 54, No. 1. pp. 111-119.
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AU - Nam, SukWoo

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