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Preparation and characterization of crosslinked sulfonated poly(ether ether ketone) membranes using 4-vinylbenzyl chloride via electron beam irradiation and subsequent Friedel-Craft reaction

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Abstract

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.

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Authors and Affiliations

  1. Department of Energy Storage and Conversion Engineering, Chounbuk National University, Jeonbuk, 561-756, Korea

    Eun-Byul Lee & Youn-Sik Lee

  2. Division of Chemical Engineering, Nanomaterials Processing Research Center, Chonbuk National University, Jeonbuk, 561-756, Korea

    Qing Bo Meng & Youn-Sik Lee

  3. Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeonbuk, 580-185, Korea

    Junhwa Shin

Authors
  1. Eun-Byul Lee
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  2. Qing Bo Meng
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  3. Junhwa Shin
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  4. Youn-Sik Lee
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Correspondence to Youn-Sik Lee.

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Lee, EB., Meng, Q.B., Shin, J. et al. Preparation and characterization of crosslinked sulfonated poly(ether ether ketone) membranes using 4-vinylbenzyl chloride via electron beam irradiation and subsequent Friedel-Craft reaction. Macromol. Res. 22, 1090–1095 (2014). https://doi.org/10.1007/s13233-014-2159-x

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  • DOI: https://doi.org/10.1007/s13233-014-2159-x

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