| abstract |
The present invention relates to a high performance hollow fiber membrane and a method of manufacturing the same. The hollow fiber membrane of the present invention is composed of a polyvinylidene fluoride resin combined with a sponge-like outer pore layer and an inner support layer without macrovoids, and has a two-layered cross-section, , The outer pore layer achieves a high rejection rate due to a complete sponge-free form without macrovoids, and has high porosity due to porosity while retaining the sponge shape. Further, the present invention realizes excellent mechanical properties by increasing the concentration of the polyvinylidene fluoride resin to form the inner supporting layer by using a mixed solvent in which the mixing ratio between the good solvent and the non-solvent benzene dicarboxylic acid alkyl ester is optimized . Further, the high performance hollow fiber membrane of the present invention can be applied to seawater desalination pretreatment, water treatment, subsoil treatment, wastewater treatment, and concentration and purification. |