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

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...

Full description

Saved in:
Bibliographic Details
Published in:Chinese physics B 2011-06, Vol.20 (6), p.065206-jQuery1323923510270='49'
Main Authors: Zhou, Lan (澜周), Lü, Guo-Hua (国华 吕), Chen, Wei (维陈), Pang, Hua (华庞), Zhang, Gu-Ling (谷令 张), Yang, Si-Ze (思泽 杨)
Format: Article
Language:English
Subjects:
Contact angle
Electrodes
Emission
Free energy
Liquids
Plasma (physics)
Plumes
Polytetrafluoroethylenes
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 O+2, 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.
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/20/6/065206