Blended Silicone-Ionic Liquid Membranes: Transport Properties of Butan-1-ol Vapor

0341297 - ÚCHP 2010 RIV GB eng J - Journal Article
Vopička, O. - Hynek, V. - Friess, K. - Izák, Pavel
Blended Silicone-Ionic Liquid Membranes: Transport Properties of Butan-1-ol Vapor.
European Polymer Journal. Roč. 46, č. 1 (2010), s. 123-128. ISSN 0014-3057. E-ISSN 1873-1945
R&D Projects: GA ČR GA104/08/0600
Institutional research plan: CEZ:AV0Z40720504
Keywords : Ionic liquid * PDMS * sorption kinetics
Subject RIV: CI - Industrial Chemistry, Chemical Engineering
Impact factor: 2.518, year: 2010

This paper is focused on modeling of sorption and desorption kinetics as well as on equilibrium butan-1-ol vapor sorption in blended poly(dimethylsiloxane)-benzyl-3-butylimidazolium tetrafluoroborate membranes. Based on the generalized Fick's second law, on time-dependent boundary conditions and on two models of equilibrium sorption, the diffusion coefficients of butan-1-ol were calculated from the experimental data using the finite difference modeling. Although anomalous sorption occurred at higher concentrations of butan-1-ol, the diffusion coefficients calculated from the data on sorption and desorption kinetics were in a good agreement. The increase of the ionic liquid content in poly(dimethylsiloxane) elevated the butan-1-ol equilibrium concentration in the membrane, and, at the same time, decreased the values of butan-1-ol diffusion coefficient.
Permanent Link: http://hdl.handle.net/11104/0005803