Gas Transport Properties of PEBAX®/Room Temperature Ionic Liquid Gel Membranes

0381989 - ÚCHP 2013 RIV GB eng J - Journal Article
Bernardo, P. - Jansen, J. C. - Bazzarelli, F. - Tasselli, F. - Fuoco, A. - Friess, K. - Izák, Pavel - Jarmarová, Veronika - Kačírková, Marie - Clarizia, G.
Gas Transport Properties of PEBAX®/Room Temperature Ionic Liquid Gel Membranes.
Separation and Purification Technology. Roč. 97, SI (2012), s. 73-82. ISSN 1383-5866. E-ISSN 1873-3794.
[Conference on Ionic Liquids in Separation and Purification Technology (ILSEPT) /1./. Sitges, 04.09.2011-07.09.2011]
R&D Projects: GA ČR GAP106/10/1194
Grant - others:RFCS(XE) RFCR-CT-2010-00009
Institutional support: RVO:67985858
Keywords : room temperature ionic liquid * ionic liquid * polymer gel
Subject RIV: CI - Industrial Chemistry, Chemical Engineering
Impact factor: 2.894, year: 2012

This work evaluates the possibility to tailor the gas separation properties of elastomeric block copolyamide membranes by means of room temperature ionic liquid (RTIL), based on the 1-n-alkyl-3- methylimidazolium cation. Polymeric gel membranes were prepared by adding from 20 to 80 wt.% of 1-butyl-3-methylimidazolium trifluoromethanesulfonate, [BMIM][CF3SO3] to Pebax 1657 and Pebax 2533. The effect of the ionic liquid on the microstructure, properties and performance of these membranes was discussed. DSC analysis showed a gradual decrease of the melting point of the polyamide (PA) blocks in the gel with a decrease in the corresponding melting enthalpy and a complete disappearance of the crystallinity of the polyether (PE) phase with increasing IL content in the case of Pebax 1657. In Pebax 2533 there is virtually no shift in the peak positions and both crystal phases remain present in the gel, indicating effective phase separation between the crystalline fraction of the polymer and the IL, in contrast with the high compatibility and the good mixing of the polymer and the IL observed in Pebax 1657.
Permanent Link: http://hdl.handle.net/11104/0212339