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

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/cm²), when compared with PVDF. It is believed that the PDB-modified GNP-PVDF composites would be a promising material for electronic applications.

KEYWORDS:

• Poly (vinylidene fluoride)
• graphite nanopowders
• dielectric properties
• Ferroelectric
• electrical properties
• polystyrene-2% divinyl benzene
• X-ray diffraction
• morphology
• composites

Acknowledgments

The authors gratefully acknowledge the financial support obtained from the DST-FIST and UGC-DRS grant for the development of research work in the School of Chemistry, Sambalpur University and project grant of DST Govt. of Odisha, India. One of the authors SM thanks UGC, New Delhi for financial support through BSR Research fellowship.

Disclosure statement

No potential conflict of interest was reported by the authors.

Statement of Novelty

In this communication, we made an attempt to develop Polystyrene 2% divinyl benzene (PDB) modified graphite nanopowders (GNP)-poly (vinylidene fluoride) (PVDF) composites via solution casting technique. It was observed that the composites had a higher dielectric constant (≈ 76) and relatively lower dielectric loss (<1), than that of the GNP-PVDF composite and pristine polymer matrix. Moreover, our result showed that the prepared composites with high dielectric constant and low dielectric loss might be fulfilling all criteria for publication in your esteemed journal. The finding of this manuscript may be useful for the development of promising material for electrical and electronic applications.

Additional information

Notes on contributors

Srikanta Moharana

Srikanta Moharana was born in Jagatsinghpur, Odisha, India in 1990. He received M.Sc. degree in Chemistry (2012) from National Institute of Technology (NIT), Rourkela, and M.Phil in Chemistry (2013) from School of Chemistry, Sambalpur University, Odisha, India. His research interest includes Synthesis and Characterization of Functionalized Ceramic Polymer Nanocomposites (FCPNs) for device applications.

Mukesh K. Mishra

Mukesh K. Mishra is currently, working as an Assistant Manager cum Research Officer in Dalmia Cement Research Centre, Chennai, India. He obtained his Ph.D. (2018) and M.Sc. degree (2011) in Chemistry from School of Chemistry, Sambalpur University, Odisha, India. His research areas are focused on polymer, ceramics, composites, dielectrics and geopolymer cement.

B. Dash

B. Dash is a senior scientist of Hydro & Electrometallurgy Department of CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, India. She is Ph.D. in chemistry. Her research interests include precipitation of hydrated alumina, extractive metallurgy, layered double hydroxides and applications.

R. N. Mahaling

R. N. Mahaling is currently working as an Reader in School of Chemistry, Sambalpur University, Odisha, India. Before he joined this University he worked in the Institute of Polymer Research (IPF) Dresden, Germany and University of Orleans, CNRS France as a postdoctoral fellow. He earned his Ph.D. (2009) & M.Tech degree (2004) from IIT Kharagpur and M. Sc degree from Sambalpur University (2001). His research and scientific areas are Polymeric and Materials Chemistry, nanocomposites and structure properties relationships.