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Issue 31, 2017
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Enhancement of the dielectric response in polymer nanocomposites with low dielectric constant fillers

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Abstract

In order to increase the dielectric constants of polymer-based dielectrics, composite approaches, in which inorganic fillers with much higher dielectric constants are added to the polar polymer matrix, have been investigated. However, high dielectric constant fillers cause high local electric fields in the polymer, resulting in a large reduction of the electric breakdown strength. We show that a significant increase in the dielectric constant can be achieved in polyetherimide nanocomposites with nanofillers whose dielectric constant can be similar to that of the matrix. The presence of nanofillers reduces the constraints on the dipole response to the applied electric field, thus enhancing the dielectric constant. Our results demonstrate that through nanostructure engineering, the dielectric constant of nanocomposites can be enhanced markedly without using high dielectric constant nanofillers.

Graphical abstract: Enhancement of the dielectric response in polymer nanocomposites with low dielectric constant fillers

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Supplementary files

Article information


Submitted
18 Mar 2017
Accepted
08 Jul 2017
First published
28 Jul 2017

Nanoscale, 2017,9, 10992-10997
Article type
Communication

Enhancement of the dielectric response in polymer nanocomposites with low dielectric constant fillers

Y. Thakur, T. Zhang, C. Iacob, T. Yang, J. Bernholc, L. Q. Chen, J. Runt and Q. M. Zhang, Nanoscale, 2017, 9, 10992
DOI: 10.1039/C7NR01932G

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