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Electrical Conductivity Behavior of Chemically Surface Modified MWNTs in Epoxy Matrix Composites
Joohyuk Park,Abu Bakar Bin Sulong 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
Few attempt to study the effects of chemical surface modification carbon nanotubes (CNTs) to the electrical conductivity nanocomposites instead to increase dispersion and interfacial bonding strength between CNTs and polymer matrix. Therefore, the electrical conductivity of two type’s chemical surface modified (carboxylated and octadecylated) multi-walled carbon nanotubes (MWNTs), non ionic surfactant additive MWNTs and as produced MWNTs reinforced epoxy nanocomposites are investigated by as function of MWNTs concentration. As-produced MWNTs and surfactant additive MWNTs nanocomposites resulted higher electrical conductivity at low loading concentration. However, chemically surface modified MWNTs significantly decreased the electrical conductivity of epoxy nanocomposite. Therefore, it can be deduced that the chemically surface modified MWNTs are not suitable electrical applications.