Journal
CHEMICAL PAPERS
Volume 75, Issue 11, Pages 5663-5685Publisher
SPRINGER INTERNATIONAL PUBLISHING AG
DOI: 10.1007/s11696-021-01744-2
Keywords
Carbon molecular sieve; CO2 separation; Mixed matrix membrane; Polymer blend
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Polymeric blend mixed matrix membranes (PB3Ms) with different blend compositions at a fixed content of carbon molecular sieve (CMS) inorganic filler were synthesized, showing significant enhancement in CO2 permeance and CO2/CH4 selectivity. The membranes prepared by solution casting method demonstrated competitive CO2/CH4 separation performance compared to pure PES membrane.
Polymeric blend mixed matrix membranes (PB3Ms) are synthesized with different blend compositions at a fixed content of carbon molecular sieve (CMS) inorganic filler. The resulting membranes are characterized by FESEM, TGA, DSC and FTIR analyses. Polyethersulfone (PES)/polyvinyl acetate (PVA(c))/CMS polymeric blend mixed matrix membranes are prepared by solution casting method. A homogenous mixture of all these components is formed and cast on a clean glass plate. The produced PB3Ms show drastic enhancement in CO2 permeance and CO2/CH4 selectivity in both single and mixed gas permeation tests in comparison with pure PES membrane. Significant CO2 permeance of 132.47 GPU with CO2/CH4 selectivity of 75.27 at 6 bar is obtained for the PB3M having 80 wt%/20 wt% blend ratio of PES/PVA(c) and 20 wt% CMS loading. The synthesized polymeric blend mixed matrix membranes in this research study demonstrate competitive CO2/CH4 separation performance in comparison with the reported literature on PB3Ms for gas separation.
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