Fabrication of Superhydrophobic-Superlipophilic Cotton Fabric by Layer Self-assembly Method and Its Oil-water Separation Performance
YANG Fusheng1, ZHANG Zhenyu1, LI Yunqing1, CHEN Yongzhe1, REN Yongzhong1, MA Le1, YANG Wu2
1 School of Civil Engineering, Lanzhou Institute of Technology, Lanzhou 730050, China 2 Key Laboratory of Ecological-environment-related Polymer Materials of Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
Abstract: Water resources polluted by oil seriously affect human health and ecosystem. In order to obtain materials with excellent oil-water separation performance, assembling nanometre silver thin layer on the surface of cotton fabric by layer self-assembly method, and modified it with dodecyl mercaptan, then cotton fabric with superhydrophobic-superoleophilic performance is prepared. The microstructure, surface chemical composition, wettability and oil-water separation performance of superhydrophobic- superlipophilic cotton fabric are characterized by scanning electron microscope, X-ray diffractometer, contact angle tester and separation efficiency. The modified cotton fabric is loaded up with dense nano silver layers, the water contact angle is up to 160° and the oil contact angle is 0° on the surface, showing excellent superhydrophobic-superlipophilic performance. Nano-silver is firmly attached to the surface of cotton fabric, showing fine wear resistance and corrosion resistance. The oil-water separation test shows that the cotton fabric not only have a good recycling ability,but also having separation efficiency of different types of oil and water mixtures, and separation efficiency is over 88%. In addition, the cotton fabric can not only separate light oil on water and water sinking oil from water, but also can separate the mixture formed by three phases of light oil-water-sinking oil.
杨福生, 张振宇, 李云清, 陈永哲, 任永忠, 马乐, 杨武. 层层自组装法制备超疏水/超亲油棉织物及其油水分离性能[J]. 材料导报, 2021, 35(12): 12190-12195.
YANG Fusheng, ZHANG Zhenyu, LI Yunqing, CHEN Yongzhe, REN Yongzhong, MA Le, YANG Wu. Fabrication of Superhydrophobic-Superlipophilic Cotton Fabric by Layer Self-assembly Method and Its Oil-water Separation Performance. Materials Reports, 2021, 35(12): 12190-12195.
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