A versatile coating approach to fabricate superwetting membranes for separation of water-in-oil emulsions |
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| Authors: | Yi Hou Chun-ting Duan Ning Zhao Huan Zhang Yi-ping Zhao Li Chen Hong-jun Dai Jian Xu |
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| Affiliation: | 1. School of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China;Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry,Chinese Academy of Sciences, Beijing 100190, China;2. Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry,Chinese Academy of Sciences, Beijing 100190, China;3. School of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China;4. SEAPS Science & Technology Co., Ltd., Caofeidian Industrial Zone, Tangshan 063000, China |
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| Abstract: | Separation of oil/water mixtures, especially for the emulsified oil/water mixtures, is important because of the frequent occurrence of oil spill accidents. Utilizing superwetting porous membrane has become a promising approach to separate either surfactant-free or surfactant-stabilized emulsions. Herein we report a facile and versatile strategy for preparing hydrophobic/under-oil superhydrophobic membranes by coating the skeletons of the membranes with the poly[(3,3,3-trifluoropropyl)methylsiloxane] (PTFPMS) nanoparticles. The obtained membranes could be used to separate various waterin- oil emulsions with high flux and separation efficiency. In addition, owning to the outstanding resistance of PTFPMS to the most organic solvents or oils, the modified membranes exhibited the excellent reusability and the antifouling properties that were critical in the practical applications. Many commercially available membranes can be modified by such a simple method. |
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| Keywords: | Emulsion Membrane Separation Superwetting Poly[(3,3,3-trifluoropropyl)methylsiloxane] |
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