Figure 2 shows the SEM micrograph of the fracture surface and the XRD pattern of the nano-ZnO/P(MMA-co-BA) nanocomposites. The nano-ZnO was observed as very tiny white particles, well distributed in the P(MMA-co-BA) matrix as shown in Fig. 2(a). The presence of embedded nano-ZnO were also proved by the crystalline peaks of hexagonal ZnO observed in the XRD pattern at 2θ=31.8°, 34.5°and 36.4° (Fig. 2(b)), in which they were concealed with the board amorphous halo peak of P(MMA-co-BA) copolymer matrix.