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Gas transport properties of novel mixed matrix membranes made of titanate nanotubes and PBI or PPO
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SYSNO ASEP 0450866 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Gas transport properties of novel mixed matrix membranes made of titanate nanotubes and PBI or PPO Author(s) Giel, Verena (UMCH-V) RID, ORCID
Galajdová, Barbora (UMCH-V) ORCID
Popelková, Daniela (UMCH-V)
Kredatusová, Jana (UMCH-V) RID
Trchová, Miroslava (UMCH-V) RID, ORCID
Pavlova, Ewa (UMCH-V) RID
Beneš, Hynek (UMCH-V) RID, ORCID
Válek, R. (CZ)
Peter, Jakub (UMCH-V) RID, ORCIDSource Title Desalination and Water Treatment. - : Taylor & Francis - ISSN 1944-3994
Roč. 56, č. 12 (2015), s. 3285-3293Number of pages 9 s. Action International Conference on Membrane and Electromembrane Processes - MELPRO 2014 Event date 18.05.2014-21.05.2014 VEvent location Prague Country CZ - Czech Republic Event type WRD Language eng - English Country US - United States Keywords polybenzimidazole ; poly(phenylene oxide) ; titanate nanotubes Subject RIV CD - Macromolecular Chemistry R&D Projects GPP106/12/P643 GA ČR - Czech Science Foundation (CSF) Institutional support UMCH-V - RVO:61389013 UT WOS 000364327500028 EID SCOPUS 84946492695 DOI 10.1080/19443994.2014.981931 Annotation Titanate nanotubes (TiNTs) for enhancing the gas separation performance of mixed matrix membranes (MMMs) are addressed in this work. The incorporation of different amount of TiNT into commercially available polymers such as polybenzimidazole (PBI) and poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) was successfully carried out. The structure and properties of the MMMs were examined using scanning electron microscope (SEM), infrared spectroscopy (IR), and thermogravimetric analysis (TGA). From SEM studies, it was found that the membranes are homogenous and the nanotubes are well distributed in the polymer matrix. The IR spectra showed that PBI interacts with the nanotubes, whereas interaction of PPO with TiNT has not been observed. TGA measurements of PBI–TiNT membranes showed an increase of thermal stability with a higher content of TiNT, whereas no influence of TiNT in PPO membranes is ascertainable. The content of TiNT in membranes affects also the gas transport properties which were investigated with a time lag permeation apparatus and a sorption balance. It is shown that the presence of the TiNT increases the permeability coefficients of H2, CO2, O2, N2, and CH4 in the PPO–TiNT membranes and decreases these values in the PBI–TiNT membranes. The obtained results of the separation showed that 6 wt.% of TiNT in PBI gave a rise to H2/N2 and CO2/N2 selectivities of 603 and 62 with H2 and CO2 permeabilities of 0.92 and 0.068 Barrers, respectively. PPO–TiNT MMM declined the CO2/CH4 selectivity to a value of 13 with a CO2 permeability of 156 Barrer. Sorption isotherms exhibited nonlinear “dual-sorption” behavior for all gasses. The presence of TiNT in PBI matrix increases CO2 sorptions, whereas influence on other gasses is less noticeable. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2016
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