High solvent resistance PTFPMS/PEI hollow fiber composite membrane for gas separation
作者： Yan Dai , Xuehua Ruan , Feng Bai , Miao Yu , Hao Li
DOI: 10.1016/J.APSUSC.2015.11.014
关键词:
摘要: Abstract Poly(fluoropropylmethylsiloxane) (PTFPMS), which had different properties with polydimethylsiloxane (PDMS) due to C F bond. The limitation for PTFPMS membrane achieve industrial-scale applications was the forms of modules. Thus, PTSPMS/polyetherimide (PEI) hollow fiber composite membranes have been prepared. Effects concentration, coating method, selective layer thickness, operating pressure and temperature on separation performance investigated. can form a top dense PEI substrate under suitable concentration. gas permeation rates decrease in following order: CO2 > C3H6 > H2 > O2 > CH4 > N2. Permeation CO2 C3H6 change significantly increase pressure. Based pure rates, selectivities range from 16.03 18.80 CO2/N2 11.75–19.76 C3H6/N2 ranging 0.1 0.5 MPa. Operating has significant impact CO2, CH4, O2, H2 N2. PTFPMS/PEI exhibits stable after immersed i-octane petroleum ether. selectivity decreases ratio varies 1.56–10.70%, much lower than those PDMS/PEI 8.02–21.34%.
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