An easy method for the preparation of anion exchange membranes: Graft-polymerization of ionic liquids in porous supports

Authors

  • Géraldine Merle,

    1. Membrane Science & Technology, Mesa+ Institute for Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands
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  • Annisa Chairuna,

    1. Membrane Science & Technology, Mesa+ Institute for Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands
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  • Erik Van de Ven,

    1. Membrane Science & Technology, Mesa+ Institute for Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands
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  • Kitty Nijmeijer

    Corresponding author
    1. Membrane Science & Technology, Mesa+ Institute for Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands
    • Department of Membrane Science & Technology, Mesa+ Institute for Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands
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Abstract

A novel way for anion exchange membrane (AEM) preparation has been investigated, avoiding the use of expensive and toxic chemicals. This new synthetic approach to prepare AEMs was based on the use of a porous polybenzylimidazole membrane as support in which functionalized ILs were introduced and subsequently grafted on the polymer backbone. These new AEMs were prepared and their chemical structures and properties including morphology, thermal stability, and ionic conductivity were characterized. The hydroxyl ionic conductivity of the synthesized membranes can reach values upto 6.62 × 10−3 S cm−1 at 20°C. Although the ionic conductivity is not very high yet, the work shows the strength of the concept. Membrane properties can be easily tailored toward specific applications by choosing the proper chemistry, i.e., porous polymer support, ionic liquid, and method of initiation and polymerization. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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