Enhanced dielectric properties of poly (vinylidene fluoride) composites filled with polystyrene 2% divinyl benzene modified graphite nanopowders. (23rd February 2020)

• Record Type: Journal Article
• Authors: Moharana, Srikanta; Mishra, Mukesh K.; Dash, B.; Mahaling, R. N.
• Is Part Of: Materials research innovations. Volume 24:Number 2(2020)
• Page Start: 87
• Page End: 96
• Publication Date: 2020-02-23
• Subjects: Poly (vinylidene fluoride) -- graphite nanopowders -- dielectric properties -- Ferroelectric -- electrical properties -- polystyrene-2% divinyl benzene -- X-ray diffraction -- morphology -- composites; Materials -- Research -- Periodicals; Matériaux -- Recherche -- Périodiques; 620.1105
• DOI: 10.1080/14328917.2019.1598040
• Languages: English
• ISSNs: 1432-8917

Abstract

ABSTRACT: Graphite nanopowder/poly (vinylidene fluoride) (GNP-PVDF) composite films were prepared by using polystyrene 2% divinyl benzene (PDB) via a solution casting technique. The composites had a higher dielectric constant (≈ 76) and relatively lower dielectric loss (<1), than that of the composite GNP-PVDF and pristine PVDF at 1000 Hz. The AC electrical conductivity spectrum well obeyed Jonscher's universal power law. The investigation of the polarisation–electric field loop showed a higher remnant polarisation (3. 15 μC/cm 2 ), when compared with PVDF. It is believed that the PDB-modified GNP-PVDF composites would be a promising material for electronic applications.