Dielectric and Structural Properties of Poly(vinylidene fluoride) (PVDF) and Poly(vinylidene fluoride-trifluoroethylene) (PVDF-TrFE) Filled with Magnesium Oxide Nanofillers

• Published in: Journal of nanomaterials 2019-01, Vol.2019 (2019), p.1-12
• Main Authors: Subban, R. H. Y., Majid, W. H. A., Rusop, M., Wahid, M. H. M., Arshad, A. N., Rozana, M. D.
• Format: Article
• Language: English
• Subjects: Composite materials; Crystal defects; Crystallization; Dielectric loss; Dielectric properties; Electric fields; Electronic devices; Fluorides; Fluorine; Glass substrates; Insulators; Magnesium; Magnesium oxide; Nanocomposites; Nanomaterials; Nanoparticles; Phase transitions; Polymer blends; Polyvinylidene fluorides; Science; Sensors; Superconductors (materials); Thin films; Vinylidene fluoride; Weight; Zinc oxides
• ISSN: 1687-4110; 1687-4129
• DOI: 10.1155/2019/5961563

This study examines the dielectric properties of filled PVDF film and filled PVDF-TrFE film incorporated with 1, 3, 5, and 7 weight percentages of magnesium oxide (MgO) nanofillers. The metal-insulator-metal (MIM) configuration demonstrates PVDF/MgO with 7 weight percent of MgO which produced high dielectric constant (1 kHz) with low dielectric loss. The ATR-FTIR spectra of PVDF/MgO (7%) indicate wide bonding peaks at 840 cm-1 and 880 cm-1, assigned to -CH2 and -CF2 groups, respectively. This implies the presence of high content of β-crystals in the PVDF/MgO (7%) film. A shift in the peak was observed in the same film, from 1170 cm-1 to 1180 cm-1 suggesting possible transformation from γ-crystals to β-crystals. This film showed no apparent defect on its film surface. Thus, it established that PVDF incorporated with 7% MgO can be used to produce nanocomposite thin film for low-frequency electronic devices.