Surface functionalization of silk fabric by PTFE sputter coating
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This paper describes the surface functionalization of woven silk fabric by magnetron sputter coating of PTFE (polytetrafluoroethylene). The PTFE sputter coating was applied to improve the hydrophobic property of silk fabric. The effects of PTFE sputter coating on surface morphology and surface chemical properties were characterized using atomic force microscopy (AFM) and ATR-FTIR (attenuated total reflection-Fourier transform infrared spectroscopy). The wettability of the fabric was characterized through measuring the surface contact angle by a dynamic sessile analysis (DSA) technique. The contact angle of the PTFE coated fabric showed a significant increase from 68° to about 138°. The experimental results also revealed that larger sputtering pressures brought less contact angle hysteresis.
KeywordsContact Angle PTFE Static Contact Angle Contact Angle Hysteresis Silk Fabric
This research was supported by the Program for New Century Excellent Talents in University (NCET-06-0485) and the Key Laboratory of Textile Materials, Anhui University of Technology and Science (No. 2006FZ002) and the Open Project Program of Key Laboratory of Eco-Textiles (Southern Yangtze University), Ministry of Education, China (No. KLET0613).
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