Effects of ZnO Nanoparticle on the Gas Separation Performance of Polyurethane Mixed Matrix Membrane

Polyurethane (PU)-ZnO mixed matrix membranes (MMM) were fabricated and characterized for gas separation. A thermogravimetric analysis (TGA), a scanning electron microscope (SEM) test and an atomic-force microscopy (AFM) revealed that the physical properties and thermal stability of the membranes wer...

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Bibliographic Details
Published in:Membranes (Basel) 2017-08, Vol.7 (3), p.43
Main Authors: Soltani, Banafsheh, Asghari, Morteza
Format: Article
Language:English
Subjects:
Atomic force microscopes
Atomic force microscopy
Carbon dioxide
Fourier transforms
Gas separation
Hydrogen bonding
Infrared spectroscopy
Membrane permeability
Membranes
mixed matrix membrane
Nanoparticles
Phase separation
Physical properties
Polyurethane
polyurethane (PU)
Polyurethane resins
Thermal stability
Thermogravimetric analysis
Zinc oxide
ZnO nanoparticle
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Summary:Polyurethane (PU)-ZnO mixed matrix membranes (MMM) were fabricated and characterized for gas separation. A thermogravimetric analysis (TGA), a scanning electron microscope (SEM) test and an atomic-force microscopy (AFM) revealed that the physical properties and thermal stability of the membranes were improved through filler loading. Hydrogen Bonding Index, obtained from the Fourier transform infrared spectroscopy (FTIR), demonstrate that the degree of phase separation in PU-ZnO 0.5 wt % MMM was more than the neat PU, while in PU-ZnO 1.0 wt % MMM, the phase mixing had increased. Compared to the neat membrane, the CO₂ permeability of the MMMs increased by 31% for PU-ZnO 0.5 wt % MMM and decreased by 34% for 1.0 wt % ZnO MMM. The CO₂/CH₄ and CO₂/N₂ selectivities of PU-ZnO 0.5 wt % were 18.75 and 64.75, respectively.
ISSN:2077-0375
2077-0375
DOI:10.3390/membranes7030043