超疏水聚苯胺/聚四氟乙烯复合膜的制备及油水乳液分离性能

Preparation of Superhydrophobic Polyaniline/Polytetrafluoroethylenethylene Composite Membrane and Its Separation Ability for Oil-Water Emulsion

以苯胺为原料,采用原位聚合法在聚四氟乙烯(PTFE)基体上合成聚苯胺/聚四氟乙烯(PANI/PTFE)复合膜.利用光学显微镜、扫描电子显微镜(SEM)、傅里叶变换红外光谱(FTIR)、紫外-可见吸收光谱(UV-Vis)和静态水接触角测试对PANI/PTFE复合膜的形貌、结构和浸润性进行分析,并对其油包水乳液分离性能、通量和循环使用性能进行了测试.研究结果表明,PANI/PTFE复合膜仅在重力条件就能有效分离油包水乳液;而且重复数十次过滤后,PANI/PTFE复合膜仍具有良好的抗污能力和分离性能.

With aniline as a raw material,polyaniline(PANI)composite membrane was synthesized on polytetrafluoroethylene(PTFE)by in-situ polymerization.The morphology,chemical structure and the wettability of PANI/PTFE composite membrane were analyzed by optical microscopy,scanning electron microscopy(SEM),Fourier transform infrared spectroscopy(FTIR),ultraviolet-visable absorption spectroscopy(UV-Vis)and static water contact angle tester,and the water separation performance,flux and cycle performance of the water-in-oil emulsion were tested.The results show that PANI/PTFE composite membrane can effectively separate oil-in-water emulsion only under gravity conditions,and it still has good anti-fouling ability and separation performance after filtration for dozens of times.