BIODEGRADABLE STARCH/COPOLYESTERS FILM REINFORCED WITH SILICA NANOPARTICLES: PREPARATION AND CHARACTERIZATION

摘要

Biodegradable starch/copolyesters/silica nanocomposite films were prepared by melt extrusion, using a twin screw extruder machine and blown extrusion process. The influence of the silica nanoparticle addition on mechanical and thermal properties of nanocomposite films was investigated by tensile tests; X-rays diffraction (XRD), differential scanning calorimetry (DSC) and Scanning electron microscopy (SEM) analysis and the correlation between properties was discussed. The results showed that incorporation of 2 % (wt %) of SiO_2 nanoparticle in the blend matrix of PBAT/Starch, resulted in a gain of mechanical properties of blend.