中文摘要：

对聚偏氟乙烯（PVDF）/聚丙烯腈（PAN）共混体系的相容性进行了分析,通过溶液相转化法制备了PVDF/PAN共混膜,研究了共混比对膜性能的影响,通过红外和DMA探讨了PVDF与PAN之间的相互作用。结果表明,PVDF/PAN为部分相容体系,二者在成膜过程中存在相互作用,显著提高了共混膜的水通量;在碱性条件下,对所得共混膜进行水解,制得水通量随测试体系pH值变化的共混膜,探讨了其水通量的pH值响应程度与PVDF/PAN共混体系组成变化之间的关系。

英文摘要：

The miscibility of poly（vinylidene fluoride） （PVDF） and poly（acrylonitrile） （PAN） has been investigated in this article. The PVDF/PAN blend membranes were prepared by wet phase inversion process and the effects of blend ratio on membrane properties were discussed,then the interaction of PVDF and PAN was studied by through FTIR-ATR and DMA. Results showed that the interaction produced by polymers interphase separation increased the permeability of PVDF/PAN blend membrane. The pH-sensitive membranes were then obtained by alkaline hydrolysis experiment of PVDF/PAN blend membrane. The influence of the blend system on pH-sensitive property of membrane flux was also studied.