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Mechanical properties of blended single-wall carbon nanotube composites

Published online by Cambridge University Press:  31 January 2011

D. Penumadu ,
A. Dutta ,
G. M. Pharr  and
B. Files
D. Penumadu
Affiliation:
Civil and Environmental Engineering Department, University of Tennessee, Knoxville, Tennessee 37996
A. Dutta
Affiliation:
Civil and Environmental Engineering Department, University of Tennessee, Knoxville, Tennessee 37996
G. M. Pharr
Affiliation:
Materials Science and Engineering Department, University of Tennessee, Knoxville, Tennessee 37996
B. Files
Affiliation:
ES4-Materials and Processes Branch, NASA/Johnson Space Center, Houston, Texas 77058
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Abstract

The improvement in mechanical properties of blended nanocomposites prepared using a low-viscosity, liquid epoxy resin and purified single-wall carbon nanotubes (SWCNTs) was evaluated. The macroscopic tensile stress–strain behavior for hybrid materials made with varying amounts of SWCNT was determined and showed little improvement in the breaking tensile strength. The corresponding variations in modulus and hardness were obtained using nanoindentation considering time effects and showed quantifiable but modest improvements. The small changes in the observed stiffness and breaking strength of carbon nanotube composites is due to the formation of bundles and their curvy morphology.

Type
Articles
Information
Journal of Materials Research , Volume 18 , Issue 8 , August 2003 , pp. 1849 - 1853
Copyright
Copyright © Materials Research Society 2003

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