| 초록 |
Mixed-matrix membranes(MMMs) have been developed to take advantage of the benefits of characteristics of the matrix and filler at the same time. To achieve high performance in MMMs, ZIF-8 shows enhanced gas separation performance due to an appropriate pore size to exclude gas molecules and an affinity for specific gases to improve sorption. We report an interface and interaction tuning approach for a high-performance MMM that not only improves the CO2 permeability from 70.2 to 687.7 Barrer but also improves the CO2/N2 selectivity from 30.5 to 34.9. Poly(vinyl chloride)-g-poly(oxyethylene methacrylate)(PVC-g-POEM) graft copolymer lays a key role as a soft organic matrix to provide good permeation properties, uniform distribution of zeolite imidazole frameworks-8(ZIF-8). Especially, the CO2/C3H8 and CO2/C3H6 selectivities reached 10.5 and 42.7, respectively, for PVC-g-POEM/ZIF(40%) MMMs. |
