METHOD OF MANUFACTURING MEMBRANE USING NOVEL POLYMER BASED ON POLYETHERSULFONE

The present invention relates to a method of manufacturing a membrane, and more specifically, to a method of manufacturing a membrane using a novel polymer based on polyethersulfone containing sulfonic acid. Provided is a manufacturing method of the membrane, which includes the steps of: (a) preparing a membrane composition solution containing a polymer based on polyethersulfone; (b) forming a membrane layer by applying the membrane composition solution onto a support; (c) performing a vapor induced phase separation (VIPS) process on the membrane layer; (d) performing a non-solvent induced phase separation (NIPS) process on the membrane layer after the VIPS process; and (e) after the NIPS process, drying the membrane layer. 본 발명은 멤브레인의 제조방법에 관한 것으로, 보다 상세하게는 설폰산을 포함하는 폴리에테르 설폰계 신규 고분자를 이용한 멤브레인의 제조방법에 관한 것이다.