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Polydopamine-coated poly(vinylidene fluoride) membranes with high ultraviolet resistance and antifouling properties for a photocatalytic membrane reactor |
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| Authors: | Syawaliah Muchtar Mukramah Yusuf Wahab Li-Feng Fang Sungil Jeon Saeid Rajabzadeh Ryosuke Takagi Sri Mulyati Nasrul Arahman Medyan Riza Hideto Matsuyama |
| Affiliation: | 1. Doctoral School of Engineering Science, Syiah Kuala University, Banda Aceh, Indonesia, 23111
Center for Membrane and Film Technology, Graduate School of Engineering, Kobe University, Rokkodaicho 1-1, Nada, Kobe, 657-8501 Japan;2. Center for Membrane and Film Technology, Graduate School of Engineering, Kobe University, Rokkodaicho 1-1, Nada, Kobe, 657-8501 Japan Department of Polymer Science and Engineering, Engineering Research Center for Membrane and Water Treatment, Zhejiang University, Hangzhou, 310027 China Graduate School of Science, Technology, and Innovation, Kobe University, Rokkodaicho 1-1, Nada, Kobe, 657-8501 Japan;3. Center for Membrane and Film Technology, Graduate School of Engineering, Kobe University, Rokkodaicho 1-1, Nada, Kobe, 657-8501 Japan;4. Doctoral School of Engineering Science, Syiah Kuala University, Banda Aceh, Indonesia, 23111;5. Doctoral School of Engineering Science, Syiah Kuala University, Banda Aceh, Indonesia, 23111 Department of Chemical Engineering, Syiah Kuala University, Banda Aceh, Indonesia, 23111 |
| Abstract: | We modified poly(vinylidene fluoride) (PVDF) membranes with a polydopamine (PDA) coating for photocatalytic membrane reactor application with appropriate UV resistance and studied the effects of the PDA coating conditions (i.e., coating time and dopamine concentration) and UV irradiation time on the modified PVDF membrane properties. The PVDF membrane that was surface-coated with the appropriate dopamine solution concentration and coating time played a key role in controlling the membrane properties and in protecting the modified membrane against UV radiation. The optimization of the coating condition not only completely protected the modified membrane from free-radical attack initiated through UV irradiation but also improved the membrane hydrophilicity, antifouling properties, filtration performance, and mechanical strength of the membrane. UV irradiation of the membrane that was surface-coated with a high-concentration dopamine solution for a long coating time resulted in a higher mechanical strength than that of the membrane without the application of UV irradiation. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136, 47312. |
| Keywords: | free radical scavenger photocatalytic membrane reactor polydopamine UV-resistance |