Electrical and Structural Properties of Polystyrene/Graphite Composite by Direct Mixing Method

Abstract

Melt mixing method was used in the preparation of Polystyrene (PS)/graphite composite with different graphite weight %.The electrical and structural  properties of the composite  were studied using Keithley two-point probe and GBC EMMA X-ray diffractometer (XRD) respectively.  The result showed that the electrical conductivity of the composites was improved as the weight percentage of graphite content increases but the percolation threshold was observed at 0.10wt%.  The conductivity of the composites was also observed to increase at higher temperatures. The structural result showed that the amorphous structure of polystyrene was converted to crystalline as the weight% of the graphite increases which influences the degree of crystallinity. Keywords: polymer, graphite, composite, percolation threshold, electrical conductivity DOI : 10.7176/APTA/81-03 Publication date: December 31 st 2019