Rao, Anil H. N. Thankamony, Roshni Lilly Kim, Hyoung-Juhn Nam, Sukwoo Kim, Tae-Hyun 2024-01-20T13:03:54Z 2024-01-20T13:03:54Z 2022-01-25 2013-01 0032-3861 https://pubs.kist.re.kr/handle/201004/128465 An ethyl imidazolium-functionalized poly(arylene ether sulfone) (El-PES) block copolymer was prepared as a novel anion exchange membrane. The El-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 El-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 El-PES. The El-PES membrane also displayed excellent dimensional, thermal, mechanical and chemical stabilities. (C) 2012 Elsevier Ltd. All rights reserved. English ELSEVIER SCI LTD Imidazolium-functionalized poly(arylene ether sulfone) block copolymer as an anion exchange membrane for alkaline fuel cell Article 10.1016/j.polymer.2012.11.023 1 POLYMER, v.54, no.1, pp.111 - 119 POLYMER 54 1 111 119 N scie scopus 000322356000014 2-s2.0-84871929145 Polymer Science Polymer Science Article PERFORMANCE ELECTRODE Anion exchange membrane Imidazolium-functionalized polymer Block copolymer