▎ 摘　　要

Novel processable conductive bionanocomposites containing different loadings of graphite nanoplatelets (GNPs) were developed and examined in the experiments. At the same GNPs loadings, the bionanocomposites with interfacial compatibilizer, maleated PLA (ma-PLA), exhibited higher mechanical and thermo-mechanical properties compared to neat PLA and those without ma-PLA. The strong interaction from incorporated interfacial compatibilizer with GNPs was evidenced on the fractured surface. With the micromechanical models, the mechanical properties of the bionanocomposites were evaluated. Also, their thermal and rheological properties were tested and analyzed. An approximately twofold decrease in complex viscosity was achieved for the bionanocomposites with interfacial compatibilizer. For electrical conductivity, at 5-7 wt% GNPs loadings the electrical conduction path was constructed inside the PLA matrix through the formation of the effective three-dimensional conductive networks. It was interestingly noted that above the percolation threshold the increasing GNPs loading did not contribute to the higher but lower AC conductivity. The corresponding mechanisms in AC conductivity were elucidated and discussed. POLYM. COMPOS., 40:389-400, 2019. (c) 2017 Society of Plastics Engineers