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

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Abstract

Herein, the nanocomposite films of Nylon-6 with reinforced nano-TiO2 were explored for their charge storage capacity. The high dielectric constant (ε) of TiO2, along with its compatibility with Nylon-6, formed the basis for the present study. TiO2 nanoparticles were synthesized initially using hydrothermal technique. The microscopic uniformity and anatase-phase purity of the TiO2 nanoparticles were confirmed with the help of morphological and structural investigations. The effect of weight fraction of TiO2 in Nylon-6 was investigated to understand the robustness of the fabricated nanocomposites. The composite films with 5, 10 and 20 wt% of TiO2 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% TiO2 showed the highest dielectric parameters. The nanocomposite films have the exceptional dielectric quality with ε ~ 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.

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Acknowledgements

Authors would like to acknowledge Dr. A. Srinivasan, (Professor) Dept. of Metallurgical and Materials Engineering, and his students, Mr. M. Khalifa and Mr. Govinda E. for helping in carrying out FTIR studies.

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  1. Department of Metallurgical and Materials Engineering, National Institute of Technology Karnataka, Surathkal, 575025, India

    Sunil Meti, Udaya K. Bhat & M. Rizwanur Rahman

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Meti, S., Bhat, U.K. & Rahman, M.R. Colossal dielectric permittivity of Nylon-6 matrix-based composites with nano-TiO2 fillers. Appl. Phys. A 126, 264 (2020). https://doi.org/10.1007/s00339-020-3445-4

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