Radiation-induced grafting of N-isopropylacrylamide onto the brominated poly(2,6-dimethyl-1,4-phenylene oxide) membranes |
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| Institution: | 1. Institute of Urban & Rural Mining, Changzhou University, No. 1 Gehu Road, Changzhou, Jiangsu, 213164, China;2. School of Petrochemical Engineering, Changzhou University, No. 1 Gehu Road, Changzhou, Jiangsu, 213164, China;3. Guangzhou Institute of Energy Conversion, Chinese Academy of Science, No. 2 Neng Yuan Road, Tianhe District, Guangzhou, Guangdong, 510640, China;4. Jiangsu Kaimi Membrane Technology Co. Ltd, No. 9 Huangma Road, Maqun Technology Zone, Nanjing, Jiangsu, 210049, China;1. Chemical Engineering Department, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates;2. AVT-Process Systems Engineering, RWTH Aachen University, D-52056 Aachen, Germany;1. Department of Environmental Engineering, Inha University, Michuholgu, Inharo-100, Incheon, Republic of Korea;2. Department of Chemical Engineering, COMSATS University Islamabad (CUI), Lahore Campus, Pakistan |
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| Abstract: | A novel thermo-sensitive switching membrane has been prepared by radiation-induced simultaneous grafting N-isopropylacrylamide (NIPAAm) onto brominated poly(2,6-dimethyl-1,4-phenylene oxide) BPPO. In order to attain a high grafting degree, the effects of dose, dose rate, concentration of NIPAAm, concentration of inhibitor Cu2+, membrane thickness and solvents were investigated. The grafting process was characterized by FTIR spectroscopy and the highest grafting degree obtained was 7.87%. The thermo-sensitive property of the grafted membrane was measured by water flux (20–48 °C). The results showed that the grafted membrane could respond instantly to environmental temperature changes, and there was a sharp change around the lower critical solution temperature as it is normally seen in PNIPAAm hydrogel. |
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