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ABSTRACT
In this report, a simple solution-casting technique was employed to prepare benzoxazine (BA) encapsulated BiFeO3; BFO particles (BA@BFO) usable as fillers filled poly(vinylidene fluoride) (PVDF) composite films. The effects of encapsulated BA@BFO particle on the electrical and mechanical performance of the composites were carefully investigated. The results suggested that the introduction of BA@BFO particles enhanced dielectric constant (ԑr) (≈ 62) and negligible loss (tan δ) (< 0.5) at 100 Hz. This may be due to the improved polarization, which is induced by relatively high dielectric constant ceramic particles. In addition, compared to untreated BFO particles, BA@BFO particles can be dispersed homogeneously in the poly (vinylidene fluoride) (PVDF) matrix, this might be the reason for the suppression of loss which makes them interesting for possible applications in electronic devices. Moreover, the interfacial interaction between PVDF chains and the BA@BFO particles were revealed, this interaction leads to the increase of the dielectric constant, tensile strength and relatively suppressed dielectric loss. Consequently, this study opens up the avenue for developmental analysis with respect to the use of BA in addition with BFO-PVDF composites with low dielectric loss and high dielectric constant for the next generation of high-performance dielectric capacitors.
Graphical Abstract
Conflicts of interest
The authors (s) declare no conflict of interest.
Acknowledgments
The authors gratefully acknowledge financial support from the DST-FIST and UGC-DRS grant for the development of research work in the School of Chemistry, Sambalpur University and the project grant of DST-SERB (CRG/2018/004101), New Delhi, Government of India.
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Notes on contributors
Srikanta Moharana
Srikanta Moharana is currently working as an Assistant Professor in Department of Chemistry, School of Applied Sciences, Centurion University of Technology and Management, Odisha, India. He received his M.Sc degree in Chemistry (2012) from National Institute of Technology, Rourkela, and Ph.D. (2019) & M.Phil (2013) in Chemistry from School of Chemistry, Sambalpur University, Odisha, India. His research interests include Synthesis and Characterization of Functionalized Ceramic Polymer Nanocomposites (FCPNs) for device applications
Ram Naresh Mahaling
Ram Naresh Mahaling is currently working as a 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.