Publications

Description

Authors: Miray Yasar, Berran Sanay, Cormac Duffy, Michael Thai, Neal Murphy, Barry Burns, Alojz Ivankovic

Abstract: In this study, epoxy based piezoelectric polymer composites were fabricated using two different curing agents and varying compositions of poly(vinylidene) fluoride (PVDF), barium titanate (BaTiO₃), and conductive silver nanoparticles. The effect of piezoelectric ceramic and conductive nanofillers on enhancing the PVDF β phase within the composite structure was investigated. Structural, thermal, and morphological characterizations of the polymer composites were performed using x-ray diffraction, differential scanning calorimetry, and scanning electron microscopy. Furthermore, a comprehensive analysis of mechanical properties and fracture toughness was conducted in addition to the piezoelectric behavior. A voltage output of 1.35 V was generated by a polymer composite containing 20 wt% BaTiO₃, with a Young's modulus of 2 GPa and a fracture energy of 2.3 kJ/m². The findings of this study contribute to expanding the knowledge and understanding of piezoelectric polymer composites, enabling their potential utilization in various scientific and technological applications.