Nano Science and Technology Institute
Nanotech 2010 Vol. 1
Nanotech 2010 Vol. 1
Nanotechnology 2010: Advanced Materials, CNTs, Particles, Films and Composites
 
Chapter 4: Nanostructured Coatings, Surfaces & Films
 

Atmospheric Plasma Surface Modification of Polytetrafluoroethylene Films for Metal Deposition

Authors:B.E. Stein, A.A. Bujanda, K.E. Strawhecker, D.D. Pappas
Affilation:U.S. Army Research Laboratory, US
Pages:677 - 680
Keywords:PTFE, atmospheric plasmas, adhesion
Abstract:This work details the use of atmospheric-pressure dielectric barrier discharge plasmas to enhance the adhesion of thin metal coatings to PTFE films. Differences in energetic plasma species have a pronounced effect on resulting wettability. Increased exposure to energetic oxygen ions in a He-O2 plasma leads to an increase in water contact angle, indicating either a chemical restructuring of the PTFE surface, and/or the creation of a smoother surface. Our initial results show a maximum decrease in water contact angle of approximately 21° after only 10 seconds of He-O2 plasma exposure. Scanning electron microscopy imaging performed on plasma-treated surfaces reveal changes in morphology, indicating physical etching and roughness changes caused by the plasma. A comprehensive study is also planned to observe the effect of various plasma parameters on surface energy; such as gas flow rate and composition, power output, and the effects of any evaporated monomer precursors. Additionally, a T-peel type test will be used to evaluate the strength of the polymer/metal interface. This test will also be used to quantify the extent of metal removal during testing.
ISBN:978-1-4398-3401-5
Pages:976
Hardcopy:$189.95
 
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