(Liaoning Key Laboratory of Polymer Science and Engineering, Liaoning High Performance Polymer ，Engineering Research Center, College of Chemical Engineering, Dalian University of Technology, Dalian 116024, China)
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Abstract:
The hollow fiber ultrafiltration membranes were prepared successfully from copoly (phthalazinone ether sulfone) with drywet spinning process. The effects of different additives on structure and performance of UF membrane were investigated. The results showed that with the increasing of polyvinylpyrrolidone content, the flux decreased gradually and the rejection changed little. With the increasing of nonsolvent additives such as Butanone, Propionic acid and Propanol, the flux increased while the rejection decreased. It is found that the increasing of additive content could lead to the change of membrane structure from finger to sponge.