Surface modification of PMMA/O-MMT composite microfibers by TiO2 coating |
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Authors: | Qingqing WangXin Wang Xuejia LiYibing Cai Qufu Wei |
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Institution: | Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, China |
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Abstract: | In the present work, poly(methyl methacrylate) (PMMA)/organically modified montmorillonite (O-MMT) composite microfibers were firstly prepared by emulsion polymerization combined with electrospinning, and then coated by nanosize titanium dioxide (TiO2) using RF magnetron sputter technique. The modified surfaces of PMMA/O-MMT composite microfibers were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), UV-vis spectroscopy and drop shape analyzer. Finally, the photocatalytic properties of TiO2 coated PMMA/O-MMT composite microfiber membranes were evaluated by degradation of methylene blue(MB) under UV illumination. The experimental results revealed that anatase-TiO2 and rutile-TiO2 nanoparticles were well spread and physically deposited on the surface of PMMA/O-MMT microfibers, and the wettability of the PMMA/O-MMT composite microfibers was improved after surface modification by sputter coating. Furthermore, the PMMA/O-MMT microfibers membrane coated with TiO2 performed well in photocatalytic degradation of MB. |
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Keywords: | Electrospinning RF(ratio frequency) magnetron sputtering TiO2 Microfibers Water treatment |
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