| 초록 |
Dual-phase, high-performance, all-polymeric membranes that exhibit improved CO2 permeability and CO2/N2 selectivity are manufactured. The graft copolymer poly (2-[3-(2H-benzotriazol-2-yl)-4-hydroxyphenyl]ethyl methacrylate)-graft-poly(oxyethylene methacrylate) (PBE) is incorporated in a poly(amide-b-ether) block copolymer (Pebax) matrix. The amphiphilic PBE filler selectively interacts with Pebax. The formation of interconnected CO2-philic network channels within the matrix is achieved by selective interaction of the amphiphilic PBE filler with Pebax. The membranes show a dual-phase, microphase-separated morphology, and good thermal/mechanical properties, which are confirmed by characterizations. The best performance, a CO2 permeability of 175.3 Barrer and a CO2/N2 selectivity of 48.2, is much higher than those of neat Pebax. Therefore, these all-polymeric, dual phase membranes are adequate for the commercialization of gas separation due to their simple, low cost fabrication method. |
