近年来,纳米材料在膜技术领域引起了广泛的关注和应用。所制备的分离膜具有比表面积大、孔隙率高、通量大和选择透过性好等优点,在污水处理、生物化工等行业具有良好的应用前景。本文提出一种制备高分子纳米材料及其复合膜的方法,利用冷冻-萃取技术制备高分子纳米材料分散液,进而在微孔基膜上制备复合超滤膜。以酚酞型聚芳醚酮(PEK-c)和聚偏氟乙烯(PVDF)为例研究高分子纳米材料的形成原理及制备条件;对所得纳米材料和相应的复合膜进行结构和构型的表征;继而研究其分离性能。主要研究内容和结果如下: (1)PEK-c纳米材料及其复合膜的制备与性能研究。研究了PEK-c稀溶液制备高分子纳米材料的制备原理,考察溶液浓...Nano-materials have recently attracted wide attention and been found various applications in the field of membrane technology. The prepared separation membrane has the advantages of large specific surface area, high porosity, large flux and good selectivity, leading to good application prospect in sewage treatment, biochemical industry and so on. In this paper, a method for preparing polymer nanom...学位:工学硕士院系专业:化学化工学院_化学工程学号:2062014115144