Notably enhanced dielectric response with low loss in PVDF composites filled with RuO2–BaTiO3 hybrid particles

Abstract

This study delineates the process of fabricating and the results of investigating the dielectric properties of hybrid particles created through the integration of Poly(vinylidene fluoride) (PVDF) filled with RuO _2 coated on BaTiO _3 nanoparticles ( n BT), designated as RuO _2 – n BT. These hybrid particles were successfully synthesized employing a simple and cost – effective solid – state reaction method. The inclusion of RuO _2 – n BT in the PVDF matrix engendered a notable enhancement in its dielectric properties. Notably, a RuO _2 – n BT fraction of 0.5 manifested a dielectric constant ( ε ′) of 107.4 and a dielectric loss tangent (tan δ ) value of 0.062 at 30 °C and 1 kHz. These findings signify the effective role of interfacial polarization occurring between the PVDF matrix and the RuO _2 – n BT hybrid particles, leading to a marked improvement in dielectric attributes. Moreover, the observed low tan δ value indicates the elimination of conductive pathways, an inhibitory effect attributed to the incorporation of RuO _2 – n BT hybrid particles. This study underscores the promising potential of RuO _2 – n BT hybrid particles in fine – tuning and augmenting the dielectric properties of polymer composites, particularly in scenarios necessitating low tan δ and high ε ′ values.

Keywords

• poly(vinylidene fluoride)
• ruthenium dioxide
• barium titanate
• hybrid particle
• polymer composites
• solid–state raction method