期刊
MATERIALS SCIENCE AND TECHNOLOGY
卷 27, 期 3, 页码 661-665出版社
MANEY PUBLISHING
DOI: 10.1179/026708309X12526555493233
关键词
PU/PVDF blend; Rheological property; Melt spinning; Hollow fibre membrane
资金
- National Natural Science Foundation of China [20874073]
- National 863 (high-tech research and development) Programme of China [2007AA030304]
- Tianjin Science and Technology Key Support Plan [08ZCGYGX03700]
Melt spinning and stretching process was used to prepare polyurethane/poly(vinylidene difluoride) (PU/PVDF) blend hollow fibre membrane in this study. Rheological properties of melts of PU, PVDF and their blends were studied by observing their melting viscosity changing with shear rate and temperature. Morphologies of PU/PVDF blend hollow fibre membranes with different mass ratios were also observed by SEM and results showed that PU/PVDF mass ratio of 3:1 was relatively better condition for membrane preparation. The forming mechanism of the interfacial microvoids in PU/PVDF blends was also investigated and PU/PVDF blend hollow fibre membrane with water flux of similar to 2174 L m(-2) h(-1) was finally obtained under the pressure of 0.1 MPa.
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