摘要：复合热致相分离法是使用水溶性良溶剂和水溶性添加剂的混合体系作为“复合稀释剂”，在加热搅拌罐中，在聚合物熔点(Tm)以下的温度(一般为90～170℃)下形成聚合物／复合稀释剂体系的均相溶液，在相同温度或低5～10℃的温度下纺丝，可以通过控制芯液和冷却液的组成，利用同时或先后发生的热致相分离(TIPS)和非溶剂致相分离(NIPS)过程的复合相分离过程，所制造的新型中空纤文(毛细管)多孔膜具有强度高、通量大、外表面有皮层(超滤膜)和没有皮层(微滤膜)的。复合热致相分离法应用在几乎所有半结晶性和非结晶性制膜材料，比如说：PVDF，PES，PS，PVC，PAN，PMMA，CA，等，在综合性能上最后制得的膜与NIPS法制备的同样材料的膜性能是完全无法比拟的。23458
毕业论文关键词：复合热致相分离；经典的热致相分离；修正热致相分离；非溶剂致相分离；复合稀释剂；复合相分离过程；中空纤文；毛细管；超滤膜；微滤膜。
C—TIPS method for membrane production and surface features
Abstract:    In this C-TIPS method，a mixture composed of the water-soluble good solvents and water-soluble additives was used As a “complex diluent”．A homogeneous solution (dope) of the polymer and the complex diluent was formed at a temperature below the melting point(Tm) of the polymer (generally，90-60℃)in a heating vessel with an agitator and the dope was extruded at the same temperature or 5～10℃ lower，a complex phase separation process composed 0f TIPS and NIPS happened simultaneously or successively．Novel UF or MF membrane hollow fibers(or capillaries)with high strength，high permeate flux were prepared with a skin or without a skin on the outer surface by controlling the compositions of the inner core liquid and／or of the cooling bath．The method is suited to all materials which can be used to make UF or MF membranes by NIPS method．For example，PVDF，PES，PS，PVC，PAN，PMMA，CA，ECT.；the performances of the membranes prepared by the c-TIPS method are superior to the ones made by the NIPS method using the same materials．
Key Words：complex thermally induced phase separation(c-TIPS)；classical TIPS；modified TIPS(m-TIPS)；non-solvent induced phase separation(NIPS)；   complex diluent; complex phase separation process；hollow fiber capillary；UF；MF；Membrane.
目录
1 研究背景    1
1.1 本课题的意义与内容    1
1.2 膜分离技术的概念    1
1.3 膜分离技术的特点    1
1.4 分离膜    2
1.4.1 分离膜材料、分类及装置    2
1.4.2 分离膜性能    3
1.5 复合热致相分离法的发展方向    3
2 文献综述    4
2.1 聚偏氟乙烯(PVDF)的介绍    4
2.1.1 聚偏氟乙烯的物化性质    4
2.1.2 聚偏氟乙烯的结构和物性    5
2.2 复合热致相分离法制备聚偏氟乙烯膜    6
2.2.1 复合热致相分离法制膜原理    6
2.2.2  c-TIPS制膜方法的要点    6
2.3 理论基础    9
2.3.1 液-液型相分离    9
2.3.2 固-液型相分离    11
2.3.3 综合平衡相图    12
3 实验部分    14
3.1 实验原料及主要试剂    14
3.2 实验仪器    14
3.3 实验内容    15
4结果与讨论    19
4.1 聚偏氟乙烯膜的膜形态    19
4.2 聚偏氟乙烯膜的水通量    21
4.3 聚偏氟乙烯膜的截留率    22 复合热致相分离法（C-TIPS）制备聚偏氟乙烯（PVDF）多孔膜及表征:http://www.751com.cn/huaxue/lunwen_16524.html