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Internet Electronic Journal of Molecular Design - IEJMD, ISSN 1538-6414, CODEN IEJMAT
ABSTRACT - Internet Electron. J. Mol. Des. March 2006, Volume 5, Number 3, 135-143

Nanoindentation Investigation of Carbon Nanotube-Polymer Composites
Peter M. Nagy, Dora Aranyi, Peter Horváth, Petra Pötschke, Sven Pegel, and Erika Kálmán
Internet Electron. J. Mol. Des. 2006, 5, 135-143

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Abstract:
Polymer-carbon nanotube (CNT) composites are promising structural materials due to high formability, good mechanical properties and high electrical conductivity. The main targets of polymer-CNT composite research are to reach a homogeneous distribution of the CNT in the polymer, and to achieve a high adhesion between CNT and polymer. The resulting properties were less frequently investigated till now, for example nanoindentational hardness and Young's modulus have not been studied to our knowledge. Nanoindentation was chosen as method of investigation, because it requires a small piece of sample material and it is nearly damage free. Beside an MWNT free reference samples with 2, 4, and 6 wt% of multiwalled carbon nanotubes (MWCNT) were produced using the master batch dilution method starting from a composite with 15 wt% MWCNT. Nanoindentation investigations showed an increase in hardness and Young's modulus of the samples by increasing the MWCNT concentration. This increase was about twice the weight fraction of MWCNT in the nanocomposite samples.

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