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High‐performance Polymer Membranes with Multi‐functional Amphiphilic Micelles for CO 2 Capture
Author(s) -
Kim Sang Jin,
Jeon Harim,
Kim Dong Jun,
Kim Jong Hak
Publication year - 2015
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201501063
Subject(s) - copolymer , membrane , selectivity , micelle , amphiphile , polymer chemistry , polymer , methacrylate , chemical engineering , zeolitic imidazolate framework , ethylene oxide , chemistry , materials science , organic chemistry , aqueous solution , metal organic framework , adsorption , catalysis , biochemistry , engineering
Herein, we report a high performance polymer membrane with simultaneously large improvements in the CO 2 permeability and CO 2 /N 2 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 CO 2 and N 2 permeabilities continuously increased with PDMS‐g‐POEM content, whereas the CO 2 /N 2 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 CO 2 permeability and CO 2 /N 2 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 CO 2 capture.