Number of the records: 1  

Tailoring the Thermal and Mechanical Properties of PolyActiveTM Poly(Ether-Ester) Multiblock Copolymers Via Blending with CO2-Phylic Ionic Liquid.

  1. 1.
    0541358 - ÚCHP 2022 RIV CH eng J - Journal Article
    Klepić, M. - Fuoco, A. - Monteleone, M. - Esposito, E. - Friess, Karel - Petrusová, Zuzana - Izák, Pavel - Jansen, J.C.
    Tailoring the Thermal and Mechanical Properties of PolyActiveTM Poly(Ether-Ester) Multiblock Copolymers Via Blending with CO2-Phylic Ionic Liquid.
    Polymers. Roč. 12, č. 4 (2020), č. článku 890. E-ISSN 2073-4360
    R&D Projects: GA MŠk(CZ) EF16_026/0008413; GA ČR(CZ) GA18-05484S
    Institutional support: RVO:67985858
    Keywords : block copolymer membranes * ionic liquid * blends
    Subject RIV: CI - Industrial Chemistry, Chemical Engineering
    OBOR OECD: Chemical engineering (plants, products)
    Impact factor: 4.329, year: 2020
    https://www.mdpi.com/2073-4360/12/4/890

    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.
    Permanent Link: http://hdl.handle.net/11104/0318918
    FileDownloadSizeCommentaryVersionAccess
    polymers-12-00890.pdf03 MBPublisher’s postprintopen-access
     
Number of the records: 1