| abstract |
An object of the present invention is to provide a fiber for an artificial kidney that can easily produce a composition for producing a fiber containing a cyclic compound, has excellent blood compatibility, and has very little elution of a hydrophilic material. A fiber substrate containing a cyclic compound (A) and a polymer compound (B), wherein the cyclic compound (A) is a divalent group represented by the general formula (1): The structural unit is at least one group selected from the group consisting of the divalent group represented by (2) and the divalent group represented by the general formula (3), and the structural units are bonded cyclically. A fiber base material satisfying the relational formula (I). [Selection figure] None |