材料科学
聚氨酯
膜
纺纱
复合材料
熔融纺丝
氟化物
流变学
聚偏氟乙烯
中空纤维膜
粘度
纤维
聚合物
化学
无机化学
生物
遗传学
作者
Xiaoyu Hu,Y. B. Chen,Haoran Liang,Changfa Xiao
标识
DOI:10.1179/026708309x12526555493233
摘要
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 ∼2174 L m −2 h −1 was finally obtained under the pressure of 0·1 MPa.
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