微米/纳米结构对氟硅烷修饰氧化铝表面疏水性能的影响

高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (12): 2304.

微米/纳米结构对氟硅烷修饰氧化铝表面疏水性能的影响

陈新华^1,2, 马永梅¹, 李新红¹, 江雷¹, 王佛松¹

1. 中国科学院化学研究所, 北京100080;
2. 许昌学院化学系, 许昌461000

收稿日期:2003-10-27 出版日期:2004-12-24 发布日期:2004-12-24
基金资助:
国家自然科学基金(批准号:29992530,20125102)资助

Influence of Micro-and Nano-structures on the Hydrophobicity of the Surface of Alumina Modified with Fluoroalkylsilane

CHEN Xin-Hua^1,2, MA Yong-Mei¹, LI Xin-Hong¹, JIANG Lei¹, WANG Fo-Song¹

1. Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China;
2. Department of Chemistry, Xuchang University, Xuchang 461000, China

Received:2003-10-27 Online:2004-12-24 Published:2004-12-24

摘要/Abstract

摘要： 以多孔氧化铝膜为基板,用NaOH溶液进行化学腐蚀,控制适当的条件,得到氧化铝微米/纳米表面结构.用氟硅烷分别修饰光滑氧化铝膜、多孔氧化铝膜及其微米/纳米结构表面,进行接触角测试、XPS成分分析和SEM结构表征.结果表明,氟硅烷修饰的微米/纳米结构表面对水的接触角(149°±2°)比光滑表面(101°±1°)和纳米孔洞结构表面(141°±2°)都高.

关键词: 微米/纳米结构, 疏水性, 氟硅烷, 表面

Abstract: The wettability of solid surfaces, governed by both the chemical composition and the geometrical microstructure of the surface, is a very important property. It is reported that the hydrophobicity of a surface can be enhanced by the nano-structures or micro-structures because air that is trapped between the droplet and the solid surface minimizes the contact area. However, few studies involving the relationship between the hydrophobicity of a surface and the micro- and nano-structures have been reported. Herein, we prepared some micro- and nano-structures with a simple method, the influence of the structures on the hydrophobicity of the surface was given. Some micro- and nano-structures were constructed by etching the porous alumina membrane with NaOH solution. Then, the surfaces of smooth alumina, porous alumina membrane and the micro-and nanostructures were modified with fluoroalkylsilane(FAS-17). The wettability of the modified surfaces were studied by contact angle method and their morphology were characterized by scanning electron microscopy(SEM). The contact angle for water of the micro-and nanostructured surface(149°±2°) was much higher than that of the nano-structured surface (141°±2°) and the smooth surface(101°±1°). It was indicated that the micro-and nano-structure surfaces showed a more excellent property in improving the hydrophobicity than that of the other structured surfaces. The result of XPS analysis was also reported.

Key words: Micro- and nano-structures, Hydrophobicity, Fluoroalkylsilane, Surface

中图分类号:

TrendMD:

陈新华, 马永梅, 李新红, 江雷, 王佛松. 微米/纳米结构对氟硅烷修饰氧化铝表面疏水性能的影响. 高等学校化学学报, 2004, 25(12): 2304.

CHEN Xin-Hua, MA Yong-Mei, LI Xin-Hong, JIANG Lei, WANG Fo-Song . Influence of Micro-and Nano-structures on the Hydrophobicity of the Surface of Alumina Modified with Fluoroalkylsilane. Chem. J. Chinese Universities, 2004, 25(12): 2304.

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