Preparation of polystyrene/TiO2 nanocomposite by Atom Transfer Radical Polymerization(ATRP)

Polymer brushes have recently attracted considerable attention because of their novel structures and properties [1,2]. Covalent attachment of polymer chains to the surfacecan be accomplished by either grafting to or grafting from techniques. For better control of the molecular weightand the molecular weight distribution of the polymer chains, living radical, anionic, cationic, and ring-opening metathesis polymerizations have been used in grafting from methods[2]. Controlled radical polymerization, especially atom transfer radical polymerization (ATRP) [3] is the most used method to graft polymer chains of controlled molecular weight from, nanoparticles, and polymer backbones