Hollow-fiber membranes coated with polymerizable bicontinuous microemulsions |
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| Institution: | 1. Department of Chemistry, National University of Singapore, Kent Ridge, Singapore, Singapore;2. Department of Chemical Engineering, National University of Singapore, Kent Ridge, Singapore, Singapore;3. Division of Chemistry, NIE, Nanyang Technological University, Singapore, Singapore;1. Center for Urban Energy Research, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul, 136-791, Republic of Korea;2. Department of Energy and Environmental Engineering, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon, 305-350, Republic of Korea;3. Nanomaterials and Components Research Center, Korea Electronic Technology Insitute, #25 Saenari-ro, Bundang-gu, Seongnam-si, Gyeonggi-do 463-816, Republic of Korea;4. Environmental Radioactivity Assessment Team, Korea Atomic Energy Research Institute, 989-111 Daedeok-daero, Yuseong-gu, Daejeon, 305-353, Republic of Korea;5. Department of Interdisciplinary Bio-Micro System Technology, College of Engineering, Korea University, 146 Anam-ro, Seongbuk-gu, Seoul, 136-701, Republic of Korea;6. Center for Bionics, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul, 136-791, Republic of Korea;1. Institute of Industrial Engineering and Management, Federal University of Itajuba, Itajub a, MG, Brazil;2. Department in Chemical Engineering, Federal University of Sao João Del Rei, Ouro Branco, Research Group on Waste Treatment and Management Processes, Brazil;3. University of Kentucky, Department in Chemical Engineering, Paducah, United States;4. CEFET- RJ, Mechanical Engineering Department, Brazil;1. Institute of Modern Physics, Chinese Academy of Sciences, Gansu, China;2. Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Gansu, China;3. University of Chinese Academy of Sciences, Beijing, China;1. Anhui Province International Research Center on Advanced Building Materials, School of Materials Science and Chemical Engineering, Anhui Jianzhu University, Hefei, 230601, China;2. Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China;3. Anhui Institute of Building Science Research and Design, Hefei, 230001, China;4. Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australia |
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| Abstract: | A new method has been successfully employed to prepare hollow-fiber membranes by coating and polymerizing bicontinuous microemulsions onto the internal surfaces of hollow-fiber membranes. The bicontinuous microemulsion consisting of water, a polymerizable zwitterionic surfactant of acryloyloxyundecyl dimethylammonio acetate, methyl methacrylate, and 2-hydroxylethyl methacrylate (HEMA) can form a transparent polymer thin film after polymerization. The hollow-fiber membranes as the supports for microemulsion coatings were fabricated from the spinning solution of polyethersulfone/diethylene glycol/N-methyl-2-pyrrolidone. The microemulsion coated hollow-fiber membranes were evaluated by the separation efficiency and the permeation rate of polyethylene glycol (PEG) solutions. The performance of coated membrane on the PEG separation is strongly dependent on the concentration of HEMA and water in precursor bicontinuous microemulsions. The pore size of the hollow-fiber membranes can be regulated between about 2 to 40 nm by varying the composition of precursor bicontinuous microemulsions. The characteristics of the coated membranes is believed to be directly related to the bicontinuous structures of precursor bicontinuous microemulsions. The use of polymerizable bicontinuous microemulsions enable one to better control the microstructures of coated membranes via in situ polymerization. |
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