A supercritical carbon dioxide (SCC) process of dispersion of multi-walled carbon nano-tubes (MWCNTs) into epoxy resin has been developed to achieve MWCNT/epoxy com-posites (CECs) with improved mechanical, thermal, and electrical properties. The synthesis of CECs has been executed at a MWCNT (phr) concentration ranging from 0.1 to 0.3 into epoxy resin (0.1 mol) at 1800 psi, 90°C, and 1500 rpm over 1 h followed by curing of the MWCNT/epoxy formulations with triethylene tetramine (15 phr). The effect of SCC treat-ment on the qualitative dispersion of MWCNTs at various concentrations into the epoxy has been investigated through spectra analyses and microscopy. The developed SCC assisted process provides a good dispersion of MWCNTs into the epoxy up to a MWCNT concentra-tion of 0.2. The effects of SCC assisted dispersion at various concentrations of MWCNTs on modificationof mechanical, thermal, dynamic mechanical thermal, and tribological proper-ties and the electrical conductivity of CECs have been investigated.

• M.G.H. Zaidi(Department of Chemistry, National Institute of Technology) Corresponding Author
• S.K. Joshi(Department of Physics, National Institute of Technology)
• M. Kumar(Department of Mechanical Engineering, G.B. Pant University of Agriculture and Technology)
• D. Sharma(Department of Chemistry, National Institute of Technology)
• A. Kumar(Department of Physics, National Institute of Technology)
• S. Alam(Polymer Division, Defense Materials Stores Research Development and Establishment)
• P.L. Sah(Department of Mechanical Engineering, G.B. Pant University of Agriculture and Technology)