Effect of Oxidation Condition on the Synthesis of Graphene Nanosheets and the Electrical Properties of Poly(Trimethylene Terephthalate) Composites Prepared Using These Nanosheets

摘要

Graphene nanosheets (GNSs) with different oxygen contents crucially affect the performance of polymer composites. In this study, we compared GNSs prepared from graphite oxide (GO) using three different concentrations of potassium permanganate and thermal reduction of GO at 1050°C. The structural properties of GO and GNSs were investigated by Fourier transform infrared spectroscopy and Raman spectroscopy. Moreover, an effective coagulation method was used to prepare poly(trimethylene terephthalate) (PTT) composites filled with well-dispersed GNSs by selecting suitable solvents for solution blending. The electrical properties of PTT/GNSs were investigated to reveal the effect of oxygen content of GNSs.