"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

Study of the effective dielectric constant of lead-free electroactive polymer-piezoceramic composites using theoretical models

AMANI ALRUWAILI1,*

Affiliation

  1. Department of Physics, College of Science, Northern Border University, Arar, 1321, Saudi Arabia

Abstract

The effective dielectric constant of electroactive polymer–piezoceramic composites is studied using various theoretical models. The lead-free piezoceramic Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) which has interesting dielectric and piezoelectric properties is chosen as the filler in different polymer matrices such as Polyvinylidene fluoride (PVDF):Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT), Polyvinylidene fluoride-trifluoro ethylene, P(VDF-TrFE):BCZT, and Nylon 11:BCZT. The effective dielectric constant depends on the polymer, and filler characteristics such as its size, shape, volume fraction, and its interaction in the electroactive polymer matrix which is studied in the present article using theoretical models. The effect of filler volume percentage (10–40 vol%) on the dielectric constant is studied, and results are discussed. It is found that P(VDF-TrFE): BCZT composites at 40 vol% exhibited a higher effective dielectric constant (εr = 120) compared to PVDF: BCZT (εr = 77) and Nylon11: BCZT composites (εr = 56). Study indicates the effectiveness of the theoretical models in predicting the polymer composite properties and help in designing the best performing composites for non-linear optics (NLO), energy storage, and energy harvesting applications.

Keywords

Dielectric constant, Electroactive, Polymer composites, Filler, PVDF, BCZT, Nylon11, P(VDF-TrFE).

Citation

AMANI ALRUWAILI, Study of the effective dielectric constant of lead-free electroactive polymer-piezoceramic composites using theoretical models, Optoelectronics and Advanced Materials - Rapid Communications, 19, 5-6, May-June 2025, pp.293-297 (2025).

Submitted at: April 16, 2024

Accepted at: June 3, 2025