Effect of Curing Conditions and BaTiO3 Nanoparticle Addition on Dielectric Constant of PDMS for EAP Applications


Akdemir B. S., Kusoglu I. M.

ACTA PHYSICA POLONICA A, vol.139, no.2, pp.145-150, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 139 Issue: 2
  • Publication Date: 2021
  • Doi Number: 10.12693/aphyspola.139.145
  • Journal Name: ACTA PHYSICA POLONICA A
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, Compendex, INSPEC
  • Page Numbers: pp.145-150
  • Dokuz Eylül University Affiliated: Yes

Abstract

To a great extent, dielectric properties of electroactive polymers affect actuator efficiency. In this study, we examined the effect of BaTiO3 nanoparticles addition on dielectric constant of a PDMS nanocomposite. We optimized the curing conditions of PDMS for the highest dielectric constant. After that, we added several amounts of BaTiO3 nanoparticles (0.5-30 wt%) to PDMS. Dielectric constants of the samples were calculated by measuring capacitance values by an LCR meter at 10 kHz. The highest dielectric constant (5.09x10(-25)) belonged to the PDMS which was cured at 100 degrees C for 35 min. Structural properties of PDMS and BaTiO3 nanoparticles were determined by the Fourier transform infrared spectroscopy, differential thermal analysis, X-ray diffraction and scanning electron microscopy.