| 摘要 |
PROBLEM TO BE SOLVED: To provide a semipermeable membrane support that can obtain a semipermeable membrane having high filtering performance without through-holes because of less strike-through of a semipermeable membrane solution and less unevenness with uniform pore diameters and excelling in mutual adhesion of non-coated surfaces.SOLUTION: A semipermeable membrane support includes a coated surface and a non-coated surface of a semipermeable membrane, wherein strike-through to the non-coated surface after 10 seconds when coating the coated surface with 80 g/mof an N,N-dimethylformamide solution of 20 mass% polysulfone is at most 10% of a coated area, and the maximum diameter of strike-through to the non-coated surface is at most 2.0 mm. |
