▎ 摘　　要

Our main goals in this work were to fabricate and characterize a novel magnetic composite of graphene nanosheets and poly(arylene ether nitrile) (magnetite-GNs/PEN). Fabrication was achieved through two steps. First, covalent deposition of magnetite nanoparticles on the GNs surface in the presence of iron (III) chlorides and GNs in a solvothermal process resulted in the fabrication of the magnetite-GNs hybrids. Second, loading of the as-prepared hybrids over poly(arylene ether nitrile) (PEN) through solution-casting method afforded the magnetic composite (magnetite-GNs/PEN). Scanning electron microscope (SEM) and transmission electron microscopy (TEM) observations indicated that magnetite nanopatarticles with the sizes of 30-50 nm evenly spread over the GNs surface via covalent bond, which was confirmed by X-ray diffraction (XRD), Fourier transform infrared (FTIR) characterization and X-ray spectrometer (EDS). The mechanical properties and thermal stability of magnetite-GNs/PEN nanocomposites were significantly enhanced by incorporation of magnetite-GNs hybrids. Finally, improvement of the PEN properties by its loading with magnetite-GNs hybrids was established through our preliminary vibrating sample magnetometer (VSM) and rheological analyses. (C) 2011 Elsevier B.V. All rights reserved.