▎ 摘　　要

Graphite oxide nanosheet-poly(methyl methacrylate) (GONS-PMMA) composites were synthesized with methyl methacrylate monomer and graphite oxide nanosheets (GONS) via in-situ emulsion polymerization. The GONS-PMMA composites were then reduced to graphene nanosheet-poly(methyl methacrylate) (GNS-PMMA) using hydrazine hydrate. The obtained GNS-PMMA were evaluated with various techniques, such as Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and transmission electron microscopy (TEM), X-ray powder diffraction (XRD), thermogravimetric analyzer (TGA) and Raman spectrometry. Further-more, the GNS-PMMA was dispersed in polylactic acid (PLA) matrix so as to form conductive films. The conductivity of the films characteristic of 2.38 x 10(-14) -5.11 x 10(-6) S/cm depends on the amount of GNS-PMMA in the films. The experimental results indicate that the GNS-PMMA is satisfactorily compatible with the host PLA matrix and has considerable potential for preparing conductive films.