Ion-conductive polymer membranes containing 1-butyl-3-methylimidazolium trifluoromethanesulfonate and 1-ethylimidazolium trifluoromethanesulfonate

0353612 - ÚMCH 2011 RIV NL eng J - Journal Article
Schauer, Jan - Sikora, Antonín - Plíšková, M. - Mališ, J. - Mazúr, P. - Paidar, M. - Bouzek, K.
Ion-conductive polymer membranes containing 1-butyl-3-methylimidazolium trifluoromethanesulfonate and 1-ethylimidazolium trifluoromethanesulfonate.
Journal of Membrane Science. Roč. 367, 1/2 (2011), s. 332-339. ISSN 0376-7388. E-ISSN 1873-3123
R&D Projects: GA ČR GA203/08/0465
Institutional research plan: CEZ:AV0Z40500505
Keywords : 1-butyl-3-methylimidazolium trifluoromethanesulfonate * 1-ethylmethylimidazolium trifluoromethanesulfonate * polymer electrolyte membrane
Subject RIV: CD - Macromolecular Chemistry
Impact factor: 3.850, year: 2011

Membranes were prepared by casting a solution of a polymer and ionic liquid 1-butyl-3-methylimidazolium trifluoromethanesulfonate or 1-ethylimidazolium trifluoromethanesulfonate - typical representatives of aprotic and protic ionic liquid - and evaporating the solvent. The following polymers were used: Udel-type polysulfone, polybenzimidazole derivative, poly(vinylidene fluoride-co-hexafluoropropene) and Nafion. Polymer–ionic liquid compatibility was investigated by swelling, scanning electron microscopy and differential scanning calorimetry. Membranes conductivities in anhydrous atmosphere depended on temperature, ionic liquid concentration in the membrane, and on the type of matrix polymer. The conductivities of the fully compatible systems based on poly(vinylidene fluoride-co-hexafluoropropene) or Nafion matrixes amounted to 40% of that of neat ionic liquids.
Permanent Link: http://hdl.handle.net/11104/0006229