1. 毕业设计（论文）的内容和要求
膜材料一般分为四大类：聚合物膜，陶瓷膜，金属膜和碳膜。
目前在膜制备领域最重要的三种含氟聚合物材料分别是聚偏氟乙烯（PVDF）、聚四氟乙烯（PTFE）和乙烯-三氟氯乙烯（ECTFE）。
聚偏氟乙烯膜具有良好的热稳定性、化学稳定性以及较强的机械性能，是具有重复单元的半结晶聚合物，在平板膜、中空纤维膜以及管状膜的制备过程中，展现出优异的加工特性。
2. 参考文献
[1] R E Sousa, J C C Ferreira, C M Costa, et al., Tailoring Poly(vinylidene fluoride-co-chlorotrifluoroethylene) Microstructure and Physicochemical Properties by Exploring its Binary Phase Diagram with Dimethylformamide. Journal of Polymer Science Part B-Polymer Physics[J], 2015, 53(11): 761-773.[2] J Wang, L Zheng, Z Wu, et al., Fabrication of hydrophobic flat sheet and hollow fiber membranes from PVDF and PVDF-CTFE for membrane distillation. Journal of Membrane Science[J], 2016, 497: 183-193.[3] L Zheng, J Wang, D Yu, et al., Preparation of PVDF-CTFE hydrophobic membrane by non-solvent induced phase inversion: Relation between polymorphism and phase inversion. Journal of Membrane Science[J], 2018, 550: 480-491.[4] L Zheng, Z Wu, Y Wei, et al., Preparation of PVDF-CTFE hydrophobic membranes for MD application: Effect of LiCl-based mixed additives. Journal of Membrane Science[J], 2016, 506: 71-85.[5] L Zheng, Z Wu, Y Zhang, et al., Effect of non-solvent additives on the morphology, pore structure, and direct contact membrane distillation performance of PVDF-CTFE hydrophobic membranes. Journal of Environmental Sciences[J], 2016, 45: 28-39.[6] H Karkhanechi, M Vaselbehagh, S Jeon, et al., Preparation and characterization of polyvinylidenedifluoride-co-chlorotrifluoroethylene hollow fiber membranes with high alkaline resistance. Polymer[J], 2018, 145: 310-323.[7] Z Cui, E Drioli, and Y M Lee, Recent progress in fluoropolymers for membranes. Progress in Polymer Science[J], 2014, 39(1): 164-198.
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