fig2

Figure 2. The structural characterization of PLA-based packaging films, (A) FT-IR; (B) XRD; (C) SEM of PLA/1%MAO@SBA-15 film; (D) SEM of PLA/3%MAO@SBA-15 film; (E) SEM of PLA/7%MAO@SBA-15 film; (F) Elemental mapping of PLA/1%MAO@SBA-15 film; (G) Elemental mapping of PLA/3%MAO@SBA-15 film; and (H) Elemental mapping of PLA/7%MAO@SBA-15 film. PLA: Poly(lactic acid); FT-IR: Fourier transform infrared spectrometer; XRD: X-ray diffractometer; SEM: scanning electron microscope; MAO: cinnamon oil; SBA-15: Santa Barbara Amorphous-15.