| 摘要 |
PURPOSE: A polyolefin hollow fiber membrane and a thermal induced phase separation method for manufacturing the same are provided to simplify manufacturing processes by integrating a porous supporting layer and a non-porous active layer. CONSTITUTION: A polyolefin hollow fiber membrane includes a non-porous thin film active layer and a porous supporting layer are integrated by polyolefin-based polymer. Phase separation is not occurred on the inner surface of the non-porous thin film active layer. Phase separation is occurred on the external side of the porous supporting layer. The porous supporting layer is formed by the following steps: a hollow fiber membrane, polyolefin-based polymer, and a diluting agent are mixing and molten to prepare a dope solution; the dope solution is spun in the shape of hollow fiber; the spun product is condensed, and phase separated; the diluting agent is extracted while the phase separation process. |
