Effect of dispersion conditions on the mechanical properties of multi-walled carbon nanotubes based epoxy resin composites |
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Authors: | Parveen Garg Bhanu Pratap Singh Gaurav Kumar Tejendra Gupta Indresh Pandey R K Seth R P Tandon Rakesh Behari Mathur |
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Affiliation: | (1) Carbon Technology Unit, Division of Engineering Materials, National Physical Laboratory, CSIR, New Delhi, 110012, India;(2) Departments of Physics and Astrophysics, Delhi University, Delhi, India; |
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Abstract: | A suitable dispersion technique and quantitative evaluation of degree of dispersion of carbon nanotubes (CNT) in any solvent
and matrix system has been one of the key issues for achieving enhanced performance of CNT reinforced composites. We report
the use of UV–vis spectroscopy as a useful technique to ascertain the degree of dispersion of multiwalled carbon nanotubes
(MWCNT) in the epoxy resin. The study has enabled to maximize dispersion of MWCNT in the epoxy resin using two different routes.
As a result the composite samples prepared with only 0.3 wt.% amine functionalized MWCNT showed flexural strength of 140 MPa
over the neat resin value of 55 MPa, an improvement of ~155% which is maximum reported so far for CNT-epoxy isotropic composites. |
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