| 摘要 |
FIELD: textiles, paper. ^ SUBSTANCE: hollow fiber comprises a polymer derived from a polyimide precursor, moulded from a spin dope containing polyamine acid, and the hollow fiber has a cavity located in the center of the hollow fiber; macropores located around the cavity, and the mesopores and pikopores located around macropores where the pikopores are three-dimensionally interconnected to form a three-dimensional network structure. Polyamine acid contains a repeating unit derived from an aromatic diamine, comprising at least one functional group, which is in the ortho position with respect to the amino group and the dianhydride. ^ EFFECT: obtaining of hollow fiber with high permeability and good selectivity for the manufacture of membranes for gas separation. ^ 44 cl, 1 tbl, 8 dwg, 17 ex |
