In this study, the polymer nanocomposites was prepared by mixing the TiO2 nanofiller into the polymer PMMA matrix using the sonication and solution casting technique. The PMMA/TiO2 nanocomposite was prepared at different amount of TiO2 in PMMA and was measured using FTIR, EDX and DMTA. The DMTA results show that the higher amount of TiO2 in PMMA will contribute to the increase of the storage modulus of the nanocomposites. But, the too high amount of the filler will limit the properties of the nanocomposites. The FTIR and EDX analysis also are discussed in this paper.