The surface morphology and bonding properties of free standing PMMA/TiO2 nanocomposite films

PMMA/TiO₂ nanocomposite films in free standing form were prepared at different amount of TiO₂ nanoparticles by using sonication method. The PMMA powder and TiO₂ nanopowder were dissolved into the toluene solution and sonicated for 1 h to confirm the homogeneity of the mixture. The FESEM micrographs reveal that PMMA/TiO₂ nanocomposite contain 4 wt% TiO₂ nanoparticles can produced the homogenous mixture with only little crack observed in the sample compared to other samples. Even the agglomerations were observed in other samples, all the TiO₂ nanoparticles were fully dispersed in the PMMA matrix. The EDX results reveal the existence of the titanium and oxygen element in the nanocomposite films and FTIR results reveal the bonding properties between these two materials. Raman spectra of the PMMA/TiO₂ nanocomposite films also were discussed in this paper.