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Tailoring the Thermal and Mechanical Properties of PolyActiveTM Poly(Ether-Ester) Multiblock Copolymers Via Blending with CO2-Phylic Ionic Liquid.
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SYSNO ASEP 0541358 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Tailoring the Thermal and Mechanical Properties of PolyActiveTM Poly(Ether-Ester) Multiblock Copolymers Via Blending with CO2-Phylic Ionic Liquid. Author(s) Klepić, M. (CZ)
Fuoco, A. (IT)
Monteleone, M. (IT)
Esposito, E. (IT)
Friess, Karel (UCHP-M)
Petrusová, Zuzana (UCHP-M) RID, ORCID, SAI
Izák, Pavel (UCHP-M) RID, ORCID, SAI
Jansen, J.C. (IT)Article number 890 Source Title Polymers. - : MDPI
Roč. 12, č. 4 (2020)Number of pages 13 s. Language eng - English Country CH - Switzerland Keywords block copolymer membranes ; ionic liquid ; blends Subject RIV CI - Industrial Chemistry, Chemical Engineering OECD category Chemical engineering (plants, products) R&D Projects EF16_026/0008413 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA18-05484S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support UCHP-M - RVO:67985858 UT WOS 000535587700160 EID SCOPUS 85084575830 DOI 10.3390/polym12040890 Annotation This paper reports on the preparation and testing of blend membranes based on polyvinyl alcohol (PVA) and 1-ethyl-3-methylimidazolium dicyanamide ([EMIM] [DCA]) ionic liquid (IL) for effective CO2/H-2 gas separation. Stable membranes with 9, 14, 24, 42 and 53 wt.% of IL were prepared via the solution casting procedure. Structural analysis (XRD, Raman, TGA and DSC) revealed that the increase of the incorporated IL content in PVA affected e.g. crystalline orientation in the diffraction plane 1 0 1 in favour of plane 2 0 0. The presence of the IL shifted the Tg (65 degrees C) and Tm (165 degrees C) of neat PVA to lower temperatures, towards the values of pure IL. The gas transport in neat PVA and PVA-IL blends with low IL content was found to be diffusivity-controlled, and the IL addition leads to an increase of both gas permeability and H-2/CO2 selectivity. Instead, membranes with an IL content above 20 wt.% were more permeable for CO2 due to the prevailing solubility-controlled mechanism. Compared to neat PVA, which has barrier properties, the sample PVA-IL with 53 wt.% of IL exhibited an exceptional increase in gas permeability for both gases, H-2 circa 150 times to 8.65 Barrer and CO2 permeability circa 2400 times to 66.9 Barrer, with the corresponding ideal CO2/H-2 selectivity of 7.73 that slightly exceeds the reverse CO2/H-2 Robeson 2008 upper bound. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2022 Electronic address https://www.mdpi.com/2073-4360/12/4/890
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