▎ 摘　　要

Novel bionanocomposite films based on wheat starch (ST) blended high molecular weight polyacrylamide (PAM) and filled with graphene oxide nanosheets (GO) were prepared by casting/evaporation technique of the corresponding film-forming solutions (FFS). Addition of PAMwas performed in order to overcome brittleness of the starch material. Physicochemical properties of the starch and ST/PAMblend films were compared in order to highlight the specific strengthening and toughening effects of PAMon the ST/PAM blend. Structural analysis by means of Fourier Transform Infrared spectroscopy by attenuated total reflectance (ATR-FTIR) technique revealed that strong hydrogen bonding interactions occurred between ST and PAM molecules and ST/PAM blend and GO nanosheets, which result in a significant enhancement of the physicochemical, thermal and mechanical properties of the ST/PAM-GO bionanocomposites. Results showed that incorporation of 1 wt% ofGO into the ST/PAMblend led to a significant improvement of tensile strength by 167.17%. Moreover, water vapor permeability and moisture uptake of the ST/PAM-GO films were significantly reduced of increasing amount of GO as nanofiller.