| 초록 |
Asymmetric Polysulfone(PSf) hollow fiber membranes were prepared using dimethyl formamide(DMF) as a solvent, tetra hydro furan(THF) as a non-solvent and triton-X100 as a surfactant. Effects of THF addition were investigated to observe membrane mophology and its gas permeability. Hollow fiber membranes containing THF showed defect free mophology on the surface, while THF absent hollow fiber membranes exhibited embossing-like defects. Independent of the presence/absence ofTHF, both membranes showed over 10,000 GPU air permeability. |
