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Improvement in Elastic Modulus of MWCNT/Epoxy Nanocomposites

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Abstract:

The effect of multi-walled carbon nanotubes (MWCNT) on the elastic modulus of MWCNT/epoxy nanocomposites was investigated. Carboxylic acid-functionalized MWCNTS (MWCNT-COOH) were obtained by oxidation pristine MWCNTs via sonication in sulfuric-nitric acid. Epoxy-based nanocomposites reinforced with MWCNTs with and without functionalization were prepared. In this work, the elastic modulus of MWCNT reinforced nanocomposite was determined by free vibration test. Experimental results showed that functionalized MWCNTs improved the dispersion of MWCNTs in epoxy matrix leading to the enhancement of elastic modulus compared to those containing MWCNTs without functionalization. Nanocomposites prepared with 1 wt % of MWCNT-COOH exhibited 44 % increase in Young’s modulus.

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Periodical:

Applied Mechanics and Materials (Volumes 300-301)

Pages:

1250-1253

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.300-301.1250

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Online since:

February 2013

Authors:

Shiuh Chuan Her, Chun Yu Lai

Keywords:

Elastic Modulus, Functionalization, Multi-Walled Carbon Nanotube (MWCNT), Nanocomposite

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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