Polyethersulfone hollow fiber membrane and method of manufacturing the same

摘要

The present invention relates to a poly ether sulfone membrane, and a method for producing a hollow fiber, a polyether sulfone polymer, organic solvent, and the internal coagulating solution consisting of a solution containing a spinning dope composed of the glycol compound or a glycol compound as an organic additive, and discharge the air through the double tube-shaped nozzle and solidified by external coagulating solution, subsequently washing, drying and In preparing the polyether sulfone hollow fiber by winding, the spinning dope to have a sponge structure 5 less than the maximum diameter of the pores formed in the membrane cross-section by the addition of inorganic salts, the diameter of the pores in the film down to the inner surface increasing gradually increased, the film on the outer surface of the hollow fiber to prepare a polyether sulfone membrane is 0.2 ~ 4 of the pore diameter are present. ; The invention may preclude transmission characteristics and separation performance is excellent and at the same time has a high mechanical strength.