Surface modification of polytetrafluoroethylene film using single liquid electrode atmospheric- pressure glow discharge

doi:10.1088/1674-1056/20/6/065206

中国物理B ›› 2011, Vol. 20 ›› Issue (6): 65206-065206.doi: 10.1088/1674-1056/20/6/065206

Surface modification of polytetrafluoroethylene film using single liquid electrode atmospheric- pressure glow discharge

周澜¹, 吕国华¹, 陈维¹, 庞华¹, 杨思泽², 张谷令³

(1)Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; (2)Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;Fujian Key Laboratory for Plasma and Magnetic Resonance, Department of Aeronautics, School of Physics and Mechanical & Elect; (3)College of Science, Minzu University of China, Beijing 100191, China

收稿日期:2010-10-15 修回日期:2011-02-18 出版日期:2011-06-15 发布日期:2011-06-15
基金资助:
Project supported by the State Key Program of National Natural Science Foundation of China (Grant No. 10735090) and the Young Scientist Fund of the National Natural Science Foundation of China (Grant No. 11005151).

Surface modification of polytetrafluoroethylene film using single liquid electrode atmospheric- pressure glow discharge

Zhou Lan(周澜)^a)†, Lü Guo-Hua(吕国华)^a), Chen Wei(陈维)^a), Pang Hua(庞华)^a), Zhang Gu-Ling(张谷令)^b), and Yang Si-Ze(杨思泽)^a)c)

^a Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; ^b College of Science, Minzu University of China, Beijing 100191, China; ^c Fujian Key Laboratory for Plasma and Magnetic Resonance, Department of Aeronautics, School of Physics and Mechanical & Electrical Engineering, Xiamen University, Xiamen 361005, China

Received:2010-10-15 Revised:2011-02-18 Online:2011-06-15 Published:2011-06-15
Supported by:
Project supported by the State Key Program of National Natural Science Foundation of China (Grant No. 10735090) and the Young Scientist Fund of the National Natural Science Foundation of China (Grant No. 11005151).

摘要/Abstract

摘要： Polytetrafluoroethylene films are treated by room temperature helium atmospheric pressure plasma plumes, which are generated with a home-made single liquid electrode plasma device. After plasma treatment, the water contact angle of polytetrafluoroethylene film drops from 114° to 46° and the surface free energy increases from 22.0 mJ/m² to 59.1 mJ/m². The optical emission spectrum indicates that there are reactive species such as O₂⁺, O and He in the plasma plume. After plasma treatment, a highly crosslinking structure is formed on the film surface and the oxygen element is incorporated into the film surface in the forms of -C-O-C-, -C=O, and -O-C=O groups. Over a period of 10 days, the contact angle of the treated film is recovered by only about 10°, which indicates that the plasma surface modification is stable with time.

关键词: single liquid electrode, atmospheric pressure glow discharge, wettability, ageing effect

Abstract: Polytetrafluoroethylene films are treated by room temperature helium atmospheric pressure plasma plumes, which are generated with a home-made single liquid electrode plasma device. After plasma treatment, the water contact angle of polytetrafluoroethylene film drops from 114° to 46° and the surface free energy increases from 22.0 mJ/m² to 59.1 mJ/m². The optical emission spectrum indicates that there are reactive species such as O₂⁺, O and He in the plasma plume. After plasma treatment, a highly crosslinking structure is formed on the film surface and the oxygen element is incorporated into the film surface in the forms of -C-O-C-, -C=O, and -O-C=O groups. Over a period of 10 days, the contact angle of the treated film is recovered by only about 10°, which indicates that the plasma surface modification is stable with time.

Key words: single liquid electrode, atmospheric pressure glow discharge, wettability, ageing effect

中图分类号: (Etching and cleaning)

52.77.Bn

68.08.Bc (Wetting) 82.35.Gh (Polymers on surfaces; adhesion)

周澜, 吕国华, 陈维, 庞华, 张谷令, 杨思泽. Surface modification of polytetrafluoroethylene film using single liquid electrode atmospheric- pressure glow discharge[J]. 中国物理B, 2011, 20(6): 65206-065206.

Zhou Lan(周澜), Lü Guo-Hua(吕国华), Chen Wei(陈维), Pang Hua(庞华), Zhang Gu-Ling(张谷令), and Yang Si-Ze(杨思泽) . Surface modification of polytetrafluoroethylene film using single liquid electrode atmospheric- pressure glow discharge[J]. Chin. Phys. B, 2011, 20(6): 65206-065206.

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Surface modification of polytetrafluoroethylene film using single liquid electrode atmospheric- pressure glow discharge

Surface modification of polytetrafluoroethylene film using single liquid electrode atmospheric- pressure glow discharge

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