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Dielectric Behavior in Polymer Composites and Nanodielectrics: From Fundamental Mechanisms to Functional Materials

Author(s) Dr. Veti Prasad
Country India
Abstract Polymer nanocomposites and nanodielectrics represent a transformative class of materials that combine the processability and flexibility of polymers with the superior properties of nanoscale fillers. This comprehensive review examines the fundamental mechanisms governing dielectric behavior in polymer-based nanocomposites, including interfacial polarization, percolation phenomena, and multi-region models. We explore how nanofiller characteristics—such as size, shape, surface chemistry, and dispersion quality—dramatically influence macroscopic dielectric properties. The paper discusses various types of nanofillers, including ceramic nanoparticles, carbon-based materials, metallic nanoparticles, and hybrid systems, analyzing their specific contributions to permittivity, dielectric loss, and breakdown strength. Advanced characterization techniques for probing dielectric behavior across multiple frequency and temperature ranges are reviewed. Applications in high-energy-density capacitors, flexible electronics, electromagnetic interference shielding, and electrical insulation are examined with emphasis on structure-property-performance relationships. Recent developments in bio-based nanodielectrics, self-healing composites, and multifunctional systems are highlighted. Challenges including nanoparticle agglomeration, interfacial compatibility, and scalable manufacturing are addressed along with emerging solutions. This work provides researchers and engineers with a fundamental understanding and practical guidance for designing next-generation polymer nanodielectrics with tailored dielectric properties for diverse technological applications.
Keywords Polymer nanocomposites, nanodielectrics, interfacial polarization, permittivity, dielectric breakdown, carbon nanotubes, ceramic nanoparticles, percolation threshold, Maxwell-Wagner-Sillars polarization, energy storage, high-k materials
Field Physics > Nano Technology / Nuclear
Published In Volume 4, Issue 7, July 2023
Published On 2023-07-07
DOI https://doi.org/10.70528/IJLRP.v4.i7.1839
Short DOI https://doi.org/hbdj78
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