多孔阳极氧化铝膜非对称浸润性研究
首发时间:2013-09-18
摘要:本工作通过对多孔阳极氧化铝(AAO)膜两侧表面进行非对称处理研究了其非对称浸润性。扫描电子显微镜(SEM)结果显示多孔AAO 纳米通道膜两侧具有不同大小的孔径,将AAO一面进行氧等离子处理引入含氧基团获得亲水表面,另外一面修饰低表面能的氟硅烷获得超疏水表面,实现了在AAO 纳米通道膜两侧的非对称修饰,从而获得具有亲水/疏水非对称浸润性的AAO 表面。在小孔面进行氧等离子处理、大孔面修饰氟硅烷时非对称浸润性性能最佳,此时两侧表面接触角差值达到最大值154 ,为水在AAO膜上的单向水渗透提供了可能。
For information in English, please click here
Study of asymmetric wettability of Porous anodic alumina membranes
Abstract:In this paper,We study the asymmetric wettability of porous aluminum oxide (AAO) film with asymmetric surface treatment. Scanning electron microscopy show that the pore sizes of each sides of AAO are not the same. One side of AAO is treated with oxygen plasma surface treatment technology to introduce oxygen-containing groups and thus obtain a hydrophilic surface, while the other side of AAO is modified with fluorosilanes which is a low surface energy materials to obtain a superhydrophobic surface,realizing a asymmertric modification to achieve a hydrophilic/hydrophobic asymmetric wettability surface. The perfect asymmetric wettability appears when the side with smaller pores of AAO deal with oxygen plasma surface treatmented technology and the side of bigger pores of AAO modificated with fluorosilanes, and the maximum value of the water contact angle difference of about 154 . This asymmetric surface treatment of hydrophilic/hydrophobic makes it possible to water-penetration unidirectionally.
Keywords: porous anodic oxidation aluminum asymmetric;superhydrophobic;superhydrophilic
论文图表:
引用
No.****
同行评议
勘误表
多孔阳极氧化铝膜非对称浸润性研究
评论
全部评论0/1000