The nanometer-sized CeO_2/PMMA hybrid material was prepared by in- situ polymerization method. XRD pattern shows that the hybrid material is amorphous. SEM indicates that the morphology of fracture plane of the hybrid material is different when CeO_2 content varies in the hybrid material, the tenacity fracture of hybrid material changes into fragility with the the increase of CeO_2 content. EDS reveals that the distribution of Ce in the hybrid material is uniform. It is found that the transmissivity and solubility of the hybrid material decrease with the increase of CeO_2 content.

Key words: NANOPHASE MATERIALS, HYBRID MATERIALS, PREPARATION, CHARACTERIZATION, CERIUM, CERIUM OXIDE, POLYMETHYLMETHACRYLATE, SCANNING ELECTRON MICROSCOPES, X-RAY DIFFRACTION ANALYSIS