| 초록 |
Oil-water separation has become important for not only scientific research but also practical applications such as refining oily wastewater. An important concern in the recent studies of oil-water separation is manufacturing membranes which can separate water or oil with a high flux. Manufacturing membranes by directional melt crystallization(DMC) has been used to control the size of pore wall, which could get over the intrinsic nature of oil-water separation membrane, low permeate flux. In this study, porous walls were uniformly aligned within PVDF membrane by using DMC of solvent and subsequent sublimation of crystals. By using this method, porous walls were successfully manufactured within the PVDF membrane, which in turn enhanced not only the permeate flux of the membrane but also oleophilicity and hydrophobicity of the membrane. This method can be applied as an effective way of manufacturing porous oil-water separation membranes. |
