Topological and chemical investigation on super-hydrophobicity of PTFE surface caused by ion irradiation

被引：24
|
作者：
Chen, Yan [1 ]
Zhao, Ziqiang [1 ]
Dai, Junfeng [1 ]
Liu, Yingmin [1 ]
机构：
[1] Peking Univ, Inst Heavy Ion Phys, Key Lab Heavy Ion Phys, Minist Educ, Beijing 100871, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2007年 / 254卷 / 02期
基金：
中国国家自然科学基金;
关键词：
super-hydrophobic; PTFE; ion irradiation; XPS; SEM;
D O I：
10.1016/j.apsusc.2007.06.044
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Super-hydrophobic PTFE surfaces were obtained by irradiation of 200 ke V Xe+ ion with the fluence of 6.2 x 10(13) ions/cm(2). The contact angle of water on such surface is as large as 161 +/- 3 degrees. SEM and XPS were used to investigate how the topological and chemical changes affect the wettability of the irradiated surface. Needle like structures at nanometer scale caused by irradiation are considered to be the reason of the superhydrophobicity. The formation of oxygen containing group and defluorination effect on the treated surface are inferred to have negative contribution to the hydrophobic optimization of PTFE surface. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：464 / 467
页数：4
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