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首页> 外文期刊>Journal of fiber bioengineering and informatics >Surface Morphology and Modulus, Wetting Behavior and Photocatalytic Activity of the TiO_2 Coated Materials Based on PMMA/O-MMT Composite Microfibers
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Surface Morphology and Modulus, Wetting Behavior and Photocatalytic Activity of the TiO_2 Coated Materials Based on PMMA/O-MMT Composite Microfibers

机译：基于PMMA / O-MMT复合超细纤维的TiO_2涂层材料的表面形貌，模量，润湿行为和光催化活性

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Poly(Methyl Methacrylate) PMMA/Organically Modified Montmorillonite (O-MMT) composite microfibers membrane coated with TiO_2 has significant advantages in cationic dyes adsorption and can break down the adsorbed dyes under UV radiation, which is quite useful in water treatment. In this work, PMMA/O-MMT composite microfibers were firstly prepared by emulsion polymerization combined with electrospinning, and then coated by nanosize TiO_2 using RF magnetron sputtering. The effects of TiO_2 sputter coating on morphology and surface modulus was characterized by Scanning Electron Microscope (SEM) and Atomic Force Microscopy (AFM), while the wetting behaviour was studied by drop shape analyzer. The photocatalytic degradation of methylene blue was tested under UV radiation and the properties of the treated and untreated samples were compared. It was observed from SEM images that TiO_2 was well dispersed and deposited on the surface of PMMA/O-MMT microfibers, while the AFM results showed increase in the surface modulus after TiO_2 coating. Besides, the wettability of the microfibers membrane coated with TiO_2 was altered, which facilitated water treatment in practical use. Furthermore, the PMMA/O-MMT microfibers membrane coated with TiO_2 performed well in photocatalytic degradation of methylene blue. In conclusion, PMMA/O-MMT composite microfibers membrane coated with TiO_2 was quite promising in water treatment.
机译：涂有TiO_2的聚甲基丙烯酸甲酯PMMA /有机改性蒙脱土（O-MMT）复合微纤维膜在阳离子染料吸附方面具有显着优势，并且可以在紫外线辐射下分解吸附的染料，在水处理中非常有用。在这项工作中，PMMA / O-MMT复合超细纤维首先通过乳液聚合与静电纺丝相结合的方法制备，然后使用RF磁控溅射法用纳米TiO_2进行涂覆。用扫描电子显微镜（SEM）和原子力显微镜（AFM）表征了TiO_2溅射镀膜对形貌和表面模量的影响，并通过液滴形状分析仪研究了其润湿行为。在紫外线辐射下测试了亚甲基蓝的光催化降解，并比较了处理后和未处理样品的性能。从SEM图像中观察到，TiO_2充分分散并沉积在PMMA / O-MMT微纤维的表面，而AFM结果表明，涂​​覆TiO_2后表面模量增加。此外，改变了涂覆有TiO_2的微纤维膜的润湿性，在实际使用中促进了水处理。此外，涂有TiO_2的PMMA / O-MMT微纤维膜在亚甲基蓝的光催化降解中表现良好。总之，涂有TiO_2的PMMA / O-MMT复合超细纤维膜在水处理中非常有前途。

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