High-performance Polymer Membranes with Multi-functional Amphiphilic Micelles for CO2 Capture.
Herein, we report a high performance polymer membrane with simultaneously large improvements in the CO2 permeability and CO2/N2 selectivity. These improvements are obtained by incorporation of a multi-functional amphiphilic comb copolymer micelle, that is, poly(dimethylsiloxane)-g-poly(oxyethylene methacrylate) (PDMS-g-POEM), into a poly(amide-b-ethylene oxide) (Pebax) matrix. Both CO2 and N2 permeabilities continuously increased with PDMS-g-POEM content, whereas the CO2/N2 selectivity increased up to 40 wt % of PDMS-g-POEM, which enabled the maximum performance to approach the upper bound limit (2008). The membranes with PDMS-g-POEM exhibited greater CO2 permeability and CO2/N2 selectivity than those with a zeolitic imidazolate framework (ZIF-8), a well-known expensive inorganic filler, indicating the effectiveness of PDMS-g-POEM micelles for CO2 capture.
Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-749, South Korea.
Sang Jin
SJ
Kim
Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-749, South Korea.
Harim
H
Jeon
Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-749, South Korea.
Dong Jun
DJ
Kim
Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-749, South Korea. jonghak@yonsei.ac.kr.
Jong Hak
JH
Kim
D002245:Carbon Dioxide / Q000737:chemistry*; D039301:Computers, Molecular; D004129:Dimethylpolysiloxanes / Q000737:chemistry*; D057927:Hydrophobic and Hydrophilic Interactions; D055595:Mechanical Phenomena; D008567:Membranes, Artificial; D008823:Micelles; D008958:Models, Molecular; D009584:Nitrogen / Q000737:chemistry; D010539:Permeability
D004129:Dimethylpolysiloxanes; D008567:Membranes, Artificial; D008823:Micelles; D002245:Carbon Dioxide; C013830:baysilon; D009584:Nitrogen
carbon dioxide; gas separation; membranes; micelles; selectivity