| 초록 |
Polymeric membranes have become an important gas separation process due to low price, good processability, low energy consumption, etc. Polymeric hollow fiber modules are used in the industrial gas separation process because of high surface area and packing density. Development of ultrathin-skinned asymmetric hollow fiber membranes from highly selective polymers has been a challenge in membrane-based gas separation. In this study, we present hollow fiber membranes by coating CO2 selective polymer. Asymmetric membranes were coated by CO2-faciliated polymeric materials. The effect of polymer concentration, coagulation bath temperature, and coating conditions on the membrane structure and gas permeation properties were investigated. The membrane morphologies were measured by scanning electron microscopy. Pure and mixed gas permeation measurements were performed a constant-volume/variable-pressure method equipped with a gas chromatograph for different feed pressure and temperature. |
