Preparation of dual stimuli‐responsive PET track‐etched membrane by grafting copolymer using ATRP |
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| Authors: | Kai Pan Ruimin Ren Haizhu Li Bing Cao |
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| Institution: | 1. College of Materials Science and Engineering, Beijing University of Chemical Technology, , Beijing, China, 100029;2. Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, , Beijing, China, 100029 |
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| Abstract: | A dual stimuli‐responsive (pH and thermo) polyethylene terephthalate (PET) track‐etched membrane has been prepared using atom transfer radical polymerization (ATRP). First, ATRP initiator 2‐bromoisobutyryl bromide was anchored onto the membrane surface. Then, 2‐hydroxyethyl‐methacrylate (HEMA) and N‐isopropylacrylamide (NIPAAm) were grafted onto the membrane surface using ATRP. X‐ray photoelectron spectroscopy, ATR‐Fourier transform infrared spectroscopy, scanning electron microscopy and thermogravimetric analysis were used to characterize the membrane structure and thermal properties; water flux measurement was used to investigate the double stimuli‐responsive property of the obtained membrane. The results indicate that the PHEMA and PNIPAAm binary grafted PET track‐etched membrane has double environmental responsiveness. This method provides a potential modification method for preparing functional membranes. Copyright © 2012 John Wiley & Sons, Ltd. |
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| Keywords: | double stimuli‐responsive atom transfer radical polymerization (ATRP) grafting copolymer track‐etched membrane |
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