Colossal dielectric permittivity of Nylon-6 matrix-based composites with nano-TiO2 fillers

Abstract

Herein, the nanocomposite films of Nylon-6 with reinforced nano-TiO<inf>2</inf> were explored for their charge storage capacity. The high dielectric constant (?) of TiO<inf>2</inf>, along with its compatibility with Nylon-6, formed the basis for the present study. TiO<inf>2</inf> nanoparticles were synthesized initially using hydrothermal technique. The microscopic uniformity and anatase-phase purity of the TiO<inf>2</inf> nanoparticles were confirmed with the help of morphological and structural investigations. The effect of weight fraction of TiO<inf>2</inf> in Nylon-6 was investigated to understand the robustness of the fabricated nanocomposites. The composite films with 5, 10 and 20 wt% of TiO<inf>2</inf> in Nylon-6 matrix were prepared, and their dielectric behavior was explored by fabricating capacitors with parallel plate architecture. The composite film with 20 wt% TiO<inf>2</inf> showed the highest dielectric parameters. The nanocomposite films have the exceptional dielectric quality with ? ~ 124 and low dielectric loss of 0.51 at 1 kHz. The colossal dielectric nature along with minimum sophistication in the film fabrication process makes the present nanocomposite to be a potential candidate for the various electronic devices. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.