HOLLOW FIBER, DOPE COMPOSITION FOR FORMING HOLLOW FIBER, AND METHOD OF PREPARING HOLLOW FIBER USING THE SAME

摘要

PURPOSE: A hollow fiber, a dope composition for forming hollow fiber, and a method for preparing hollow fiber using the same are provided to ensure excellent permeability in gas, selectiveity, mechanical strength, and chemical stability. CONSTITUTION: A hollow fiber comprises: a hollow positioned at the center of the hollow fiber, macropores positioned at adjacent to the hollow, and mesopores and picopores positioned at adjacent to macropores wherein the picopores are three dimensionally connected to each other to form a three dimensional network structure, the hollow fiber comprises a polymer derived from polyamic acid, and the polyamic acid comprises a repeating unit obtained from aromatic diamine including at least one ortho-positioned functional group with respect to an amine group and dianhydride.