| 초록 |
Oil-water separation has become important for not only scientific research but also practical applications such as purifying oily wastewater and oil spill pollution. A critical issue in the recent studies of oil-water separation is producing membranes which can selectively separate oil or water with a high flux. Manufacturing membranes by directional melt crystallization has been useful to control the size of pore wall, which could overcome the endemic limitation of oil-water separation membrane, low permeate flux. In this study, porous walls were homogeneously aligned within polyvinylidene fluoride membrane by using directional melt crystallization of solvent and subsequent sublimation of crystals. Using this method, porous walls were successfully produced within the polyvinylidene fluoride membrane, which in turn enhanced not only the permeate flux of oil-water separation practice but also hydrophobicity and oleophilicity of the membrane. This method can be adapted as a novel and effective way of producing porous oil-water separation membranes. |
