Keywords: میکروسکوپ نیروی الکتریکی; AAc; acrylic acid; BC; bacterial cellulose; Ch; chitosan; CNTs; carbon nanotubes; COL; collagen; EFM; electric force microscopy; FeO; iron oxide; FE-SEM; field emission scanning electron microscopy; FRP; fiber reinforced polymer; GO; graphene oxide; HA; h