Improvement of Electrical Conductivity of Polyamide 6/Polyaniline Blends by Graphene

摘要

Polymer composites of polyaniline (PANI)/polyamide 6 (PA6) blends and reduced graphene oxide (rGO) were prepared via the in situ synthesis method in order to improve formability and electrical properties. Polymer blends and composites were characterized by the Fourier transform infrared spectroscopy, scanning electron microscopy, and thermal gravimetric analysis. It was found that the composites prepared by the in situ synthesis method have better compatibility between polymer blends and matrix than that prepared by the conventional dry-mix method as investigated by scanning electron microscope (SEM). The Fourier-transform infrared (FT-IR) spectrograms indicate the presence of covalent bonds between functional groups between polyaniline and reduced graphene oxide. The PA6/PANI-rGO films show the electrical conductivity of 2.970×10~(-6) S/cm while PA6/PANI-GtO show electrical conductivity of 4.082×10~(-7) S/cm. Thermal stability of polymer blend was characterized by the thermogravimetric analysis .The thermal stability of polyamide 6 after blending is not changed significantly.