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An easy method for the preparation of anion exchange membranes: Graft‐polymerization of ionic liquids in porous supports
Author(s) -
Merle Géraldine,
Chairuna Annisa,
Ven Erik Van de,
Nijmeijer Kitty
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.38799
Subject(s) - membrane , ionic conductivity , polymerization , ionic liquid , polymer , chemical engineering , porosity , thermal stability , materials science , ionic bonding , ion exchange , polymer chemistry , conductivity , porous medium , ion , chemistry , organic chemistry , composite material , electrolyte , catalysis , electrode , biochemistry , engineering
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