Modifications of PSF Ultrafiltration Membrane

摘要

The modified ultrafiltration membrane of PSF has been developed in this paper. In order to optimize the composite properties, analysis has been adopted to search after the relationship between the composite properties and their affecting factors, such as the consistence of casting liquor, the used quantity of cross-linking agent, membrane-formed temperature'and time. The experiment shows that the above factors have great effect on properties of UF membranes, and by controlling these factors, the perdurability of membrane in organic solvent, especially in acetone can be greatly improved. And a membrane which could be used in separation of organic solvent system in this way is gained.