Determination of the conductivity characteristics of composites on polymeric basis with fillers from graphene and related structures
Keywords:
composite materials, graphene, graphene oxide, conductivity, graphene nanopowder, polymer, optical spectrophotometry, mechanical propertiesAbstract
In this article an experiment was performed on the research of the conductivity of composite materials modified by carbon nanostructures. As a part of the experiment, fillers were used on carbon nanostructures such as few-layer graphene obtained by CVD, graphene oxide and graphite nanopowder. Essential interest deals with the preparation of composite materials having high electrical properties and the ability to control the band gap. It was found that the obtained composite materials were not only conductive, but also had impressive mechanical and optical characteristics. Obtained data indicate that by increasing the concentration of the reinforcing material, we can observe the growth of conductivity. For the study of the optical and electrical properties, the composites were analyzed by the application of the optical spectrophotometry. The composite materials were also studied using Raman spectroscopy, optical and atomic force microscopy for the same. The optical band gap was calculated using the spectrum of transmission. The temperature dependence of the electrical conductivity of the composite material was analyzed. It was revealed that even at low concentrations of filler in the insulating polymer matrix, the electrical properties of the composite materials substantially increase.
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