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Title: Surface analysis of hydrophobicity of Thai silk treated by SF6 plasma
Authors: P. Suanpoot
K. Kueseng
S. Ortmann
R. Kaufmann
C. Umongno
P. Nimmanpipug
D. Boonyawan
T. Vilaithong
Keywords: Materials Science
Physics and Astronomy
Issue Date: 30-Aug-2008
Abstract: Hydrophobicity of Thai silk has been improved by plasma treatment using SF6gases discharged by an inductively coupled plasma (ICP). The plasma was generated under a pressure range of 1.3-40.0 Pa while the RF power input is in a range of 20-100 W. A single RF compensated Langmuir probe and optical emission spectroscopy (OES) were used for the plasma diagnostics. The mechanisms responsible for the hydrophobic behavior were evaluated by SEM, X-ray photoelectron spectroscopy (XPS), attenuated total reflection (ATR) infrared spectroscopy, and were compared with quantum mechanical calculation. ATR-IR detected slightly changes for the peak intensities of the bands located in the frequency region of 1000-1050 cm- 1. XPS analysis results show the presence of CF-CF group as the increment of C/F ratio with increasing pressures. The results also agree with the density functional calculation. A fluorine radical shows the deposition by CH + F-→ CF + H-reaction. © 2008 Elsevier B.V. All rights reserved.
ISSN: 02578972
Appears in Collections:CMUL: Journal Articles

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