Insights in the enhancement of electrical conductivity and dielectric constant of epoxy-carbon nanotubes decorated with CaCO₃-derived from waste eggshell hybrid composites

New insights in the development of epoxy hybrid composites using CNTs decorated with CaCO₃ derived from waste eggshell (CaCO₃-ESp) have been studied. The composite was produced by the solution stirring method. The dielectric constant, electrical conductivity, and morphology of the samples were determined. The dielectric constant and electrical conductivity were enhanced after the modification of the CNTs with CaCO₃-ESp. The high electrical conductivity and dielectric constant obtained were attributed to the high electron mobility of CaCO₃-ESp-CNTs, which helps to enhance the conductivity of the epoxy. It was found that used eggshells can be used to make sure that CNTs are spread out well when making conductive polymers for isotropic conductive adhesives, assemblies, and packaging for electronics.