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.
Atmospheric Plasma Surface Modification of Polytetrafluoroethylene Films for Metal DepositionView PDF of paper
ISBN:978-1-4398-3401-5
Pages:976
Hardcopy:$189.95
 
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