Due to the strong tendency of nanoparticles such as metal oxides to agglomerate, homogeneous dispersion of these materials in a polymeric matrix is extremely challenging. In order to overcome this problem and to enhance the filler-polymer interaction, this study focused on living polymerization that was initialized from the surface of titanium fillers. A new method for synthesizing TiO 2 /polymer nanocomposites was found with a good dispersion of the nanofillers by using the RAFT agent, 4-cyano-4-[(phenyl carbon tool) solfanylvaleric acid. This RAFT agent has an available carboxyl group to anchor onto TiO 2 nanoparticles, and an S ¼ C (C 6 H 5 ) moiety for subsequent RAFT polymerization of 4-chloromethyl styrene (PCMS) to form n-TiO 2 /4-chloromethyl styrene nanocomposites. The functionalization of n-TiO 2 was determined by FTIR and partitioning studies, the livings of the polymerization were verified using GPC, while the dispersion of the inorganic filler in the polymer was studied using electron microscopy, FTIR and thermal analysis.