Nanomechanical properties of teflon amorphous fluoropolymer -MWCNT bilayer films

R. L. Schoeppner, A. Qiu, D. D. Stauffer, R. C. Major, J. L. Skinner, T. Zifer, G. O'Bryan, A. Vance, W. W. Gerberich, D. F. Bahr, N. R. Moody

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Teflon amorphous fluoropolymer (TAF) multi-walled carbon nanotube (MWCNT) suspensions have the potential for creating conductive coatings on insulating films for numerous applications. However, there are few studies on polymer MWCNT suspension properties and even fewer that use Teflon. To define mechanical and electrical property relationships, bilayer films of TAF-MWCNT were created with differing concentrations of MWCNTs. Nanoindentation revealed that addition of 8 wt% MWCNTs to TAF increased the elastic modulus by about 25% and hardness by about 15%. Conducting indentation showed 8 wt% MWCNT films exhibit uniform stable conductance once indentation depth exceeds several hundred nanometers. Films with lower concentrations of CNTs were insulating. The two techniques provide a unique description of structure property relationships in this suspension film system.

Original languageEnglish (US)
Title of host publicationProperties and Processes at the Nanoscale - Nanomechanics of Material Behavior
Number of pages6
StatePublished - 2012
Event2011 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 28 2011Dec 2 2011

Publication series

NameMaterials Research Society Symposium Proceedings
ISSN (Print)0272-9172


Other2011 MRS Fall Meeting
Country/TerritoryUnited States
CityBoston, MA

Bibliographical note

Funding Information:
This work is supported by Sandia National Laboratories, a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company for the United States Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000.


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