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Surface functionalisation of polymer nanofibres by sputter coating of titanium dioxide

机译:通过二氧化钛的溅射涂层对聚合物纳米纤维进行表面功能化

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摘要

The surface properties of nanofibres are of importance in various applications. In this work, electrospun polyamide nanotibres were used as substrates for creating functional nanostructures on the nanofibre surfaces. A RF magnetron sputter coating was used to deposit the functional layer of titanium dioxide (TiO2) onto the nanofibres. Atomic force microscopy (AFM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and environmental scanning electron microscopy (ESEM) were employed to study the topography, grain structure and wetting of the nanofibre surfaces, respectively. The AFM results indicated a significant difference in the morphology of the nanofibres before and after the TiO2 sputter coating. The XRD analysis showed the amorphous structures of the TiO2 deposition layer. XPS spectra reflected the chemical features of the deposited nanostructures. The ESEM observation revealed that the surface wettability of TiO2 sputter coated nanofibres was significantly improved after UV irradiation. (c) 2005 Elsevier B.V. All rights reserved.
机译:纳米纤维的表面性质在各种应用中都很重要。在这项工作中,静电纺丝聚酰胺纳米纤维被用作在纳米纤维表面上创建功能性纳米结构的基质。使用射频磁控溅射涂层将二氧化钛(TiO2)的功能层沉积到纳米纤维上。分别使用原子力显微镜(AFM),X射线衍射(XRD),X射线光电子能谱(XPS)和环境扫描电子显微镜(ESEM)来研究纳米纤维表面的形貌,晶粒结构和润湿性。 AFM结果表明,在TiO2溅射涂层之前和之后,纳米纤维的形貌存在显着差异。 XRD分析显示了TiO 2沉积层的非晶结构。 XPS光谱反映了沉积的纳米结构的化学特征。 ESEM观察表明,紫外线辐照后,TiO2溅射涂覆的纳米纤维的表面润湿性得到了显着改善。 (c)2005 Elsevier B.V.保留所有权利。

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