The nano-ZnO/P(MMA-co-BA) nanocomposite sheet was characterized by XRD and SEM. The decomposition temperature of the nano-ZnO/P(MMA-co-BA) was investigated in comparison with the neat P(MMA-co-BA) by thermogravimetric analysis (TGA; Perkin Elmer, Pyris 1 TGA) under nitrogen atmosphere. The range of scanning was 50–700 °C at the heating rate was 20 °C/min