화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.22, No.10, 1090-1095, October, 2014
DOI10.1007/s13233-014-2159-x  Export Citation
Preparation and characterization of crosslinked sulfonated poly(ether ether ketone) membranes using 4-vinylbenzyl chloride via electron beam irradiation and subsequent Friedel-Craft reaction
Eun-Byul Lee1, Qing Bo Meng2, Junhwa Shin3, and Youn-Sik Lee1, 2, †
  • 1Department of Energy Storage and Conversion Engineering, Chounbuk National University, Jeonbuk, 561-756, Korea
  • 2Division of Chemical Engineering, Nanomaterials Processing Research Center, Chonbuk National University, Jeonbuk, 561-756, Korea
  • 3Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeonbuk, 580-185, Korea
E-mail:
In general, excessive water uptake of highly sulfonated aromatic hydrocarbon membranes limits their use in the fabrication of polymer electrolyte membrane fuel cells (PEMFCs). In this study, sulfonated poly(ether ether ketone) (SPEEK) was successfully crosslinked using 4-vinylbenzyl chloride as a crosslinking agent via electron beam (EB) irradiation and subsequent Friedel-Craft reaction. The crosslinking process significantly reduced the water uptake and methanol permeability of the SPEEK membranes, and greatly improved their dimensional stability and mechanical strength, although with a slight reduction in elongation at break. The process reduced the proton conductivity of the SPEEK membranes, but the proton conductivities of the crosslinked SPEEK membranes remained comparable to that of Nafion 212. The study results demonstrated the potential of the proposed crosslinking procedure to overcome excessive water uptake-induced problems of highly sulfonated aromatic hydrocarbon membranes.
Keywords:polymer electrolyte membrane;sulfonated poly(ether ether ketone);crosslinking;electron beam;Friedel-Craft reaction
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