Interface Interaction as a Factor of Dielectric Properties of Epoxy-based Composites with Graphite Nanoplatelets

Authors O.S. Yakovenko1, L.Yu. Matzui1 , Yu.S. Perets1, L.L. Vovchenko1 , V.V. Klepko2 , Ye.V. Lobko2

1T. Shevchenko National University of Kyiv, Physics Department, 64/13, Volodymyrska Str., 01601 Kyiv, Ukraine

2Institute of High-Molecular Compounds of NASU, 48, Kharkiv Road, 02160 Kyiv, Ukraine

Issue Volume 11, Year 2019, Number 2
Dates Received 05 February 2019; revised manuscript received 08 April 2019; published online 15 April 2019
Citation O.S. Yakovenko, L.Yu. Matzui, Yu.S. Perets, et al., J. Nano- Electron. Phys. 11 No 2, 02033 (2019)
PACS Number(s) 77.22, 77.84.Lf, 82.35.Np
Keywords Graphite nanoplatelets, Composite material (3) , Dielectric permittivity, Dielectric loss (2) , Interface interaction.

The paper is devoted to the investigation of the physical properties of graphite nanoplatelets / epoxy composite materials with a modified level of interface interaction due to pre-irradiation of the filler with ultraviolet light. The influence of interface interaction at the filler / matrix interface in polymer-carbon composite materials on their electrodynamic properties is determined, which is the basis for the development of composite materials with an adjustable set of physical properties. By analyzing within the model, which takes into account the volume fraction of the interface region, it has been shown that the increase of dielectric constant in composites, where pre-irradiated with ultraviolet light graphite nanoplatelets were used as a filler, occurs due to an increase of the dielectric constant of the interface layer, which is associated with a change in the chemical composition of the surface of graphite nanoplatelets.

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