| 摘要 |
PROBLEM TO BE SOLVED: To provide a hollow fiber porous membrane small in contraction percentage of an inner diameter before and after making a membrane. SOLUTION: In the hollow fiber porous membrane having a semipermeable membrane layer formed from a solution for making the membrane on the interlace outside surface, the contraction percentage of the inner diameter before and after making the membrane represented by the following equation: contraction percentage (%)=(d<SB>1</SB>-d<SB>2</SB>)/d<SB>1</SB>×100 [wherein d<SB>1</SB>is an inner diameter before making the membrane (before making the semipermeable membrane layer) and d<SB>2</SB>is an inner diameter after making the membrane (after making the semipermeable membrane layer)] is 25% or smaller. COPYRIGHT: (C)2008,JPO&INPIT
|
