| 摘要 |
<p>The present invention relates to a manufacturing method of a polyvinylidene fluoride (PVDF) hollow fiber membrane. The manufacturing method of the PVDF hollow fiber membrane does not need a separate extraction process using chemicals such as an alkali aqueous solution, thereby not influencing the structure of a separation film and has high water permeability without hydrophilicity post processes, thereby facilitating manufacturing processes. The inside of the hollow fiber membrane has a spherulite like structure and becomes a bicontinuous asymmetry structure toward the outer surface, thereby having excellent mechanical strength and having effective backwashing and membrane-cleaning processes, so that the PVDF hollow fiber membrane has remarkably improved water permeability, excellent elimination rate, and excellent filtration efficiency.</p> |
