| 초록 |
Among numerous filler materials in mixed-matrix membranes (MMMs), two-dimensional (2D) nanomaterials are promising filler compared to isotropic particles due to high aspect ratio and high barrier effect. We synthesized Zeolitic Imidazolate Framework-8 (ZIF-8) nanoplate as a new filler material through converting ZnOH nanosheet by reacting with 2-methylimidazole. For separation of propylene/propane, we successfully fabricated 6FDA-DAM based MMMs which contain synthesized ZIF-8 nanoplates with good compatibility and low interfacial gap with the polymer matrix. Since ZIF-8 nanoplates were oriented horizontally with the membrane surface, tortuosity of gas permeation paths increased. Therefore, ZIF-8 nanosheet MMMs are expected to show higher selectivity on propylene/propane separation compared to pristine 6FDA-DAM membrane and previous ZIF-8-based MMMs. |
