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Title: Dispersion and reinforcing mechanism of carbon nanotubes in epoxy nanocomposites
Authors: Bal, S
Keywords: Carbon nanotubes
flexural modulus
electrical conductivity
glass transition temperature
Issue Date: 2010
Publisher: Indian Academy of Sciences
Citation: Bulletin of Materials Science, Vol 33, No 1, P 27-31
Abstract: Carbon nanotube based epoxy composites have been fabricated at room temperature and refrigeration process using sonication principle. Flexural moduli, electrical conductivity, glass transition temperature of epoxy resin as well as nanocomposite samples have been determined. Distribution behaviour of carbon nanotubes in the epoxy matrix was examined through scanning electron microscopy. Composite samples showed better properties than resin samples due to strengthening effect of the filled nanotubes. Refrigerated nanocomposites obtained increasing mechanical property because of better dispersion due to low temperature settlement of polymers. Improvement of electrical conductivity was due to the fact that aggregated phases form a conductive three-dimensional network throughout the whole sample. The increasing glass transition temperature was indicative of restricting movement of polymer chains that ascribe strong interaction presented between carbon nanotubes and epoxy chains that was again supplemented by Raman study and SEM.
Description: Copyright for the published version belongs to Indian Academy of Sciences
Appears in Collections:Journal Articles

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