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Deacetylated Cellulose Acetate/Polyurethane Composite Nanofiber Membranes with Highly Efficient Oil/Water Separation and Excellent Mechanical Properties |
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| Authors: | Weiwen Wang XiRui Ma Junhui Si Zhixiang Cui Qianting Wang Xianhu Liu |
| Affiliation: | 1. College of Materials Science and Engineering, Fujian University of Technology, Fuzhou, Fujian, 350118 China
Fu Jian Provincial Key Laboratory of Advanced Materials Processing and Application, Fuzhou, Fujian, 350118 China Fujian Provincial Precision Processing Manufacturing Engineering Research Center, Fuzhou, Fujian, 350118 China Fuzhou Innovation Platform for Novel Materials and Mould Technology, Fuzhou, Fujian, 350118 China;2. College of Materials Science and Engineering, Fujian University of Technology, Fuzhou, Fujian, 350118 China;3. Key Laboratory of Materials Processing and Mold (Zhengzhou University), Zhengzhou, Henan, 450001 China |
| Abstract: | Nowadays, oil pollution has become more serious, which causes great threats both to the ecological environment and human life. In this study, a novel type of multifunctional deacetylated cellulose acetate/polyurethane (d-MCA:MTPU) composite nanofiber membranes for oil/water separation are successfully fabricated by electrospinning, which show super-amphiphilicity in air, super-hydrophilicity in oil, and oleophobicity in water. All the d-MCA:MTPU composite nanofiber membranes with different mass ratios can be used as water-removing, oil-removing, and emulsion separation substance only by gravity driving force. The highest separation flux for water and oil reaches up to 37 000 and 74 000 L m?2 h?1, respectively, and all the separation efficiencies are more than 99%. They have outstanding comprehensive mechanics performance, which can be controlled by simply adjusting the mass ratios. They show excellent antifouling and self-cleaning ability, endowing powerful cyclic stability and reusability. Those results show that d-MCA:MTPU composite nanofiber membranes have great application prospects in oil/water separation. |
| Keywords: | composite nanofiber membranes deacetylated cellulose acetate electrospinning mechanical properties oil/water separation polyurethane |
