preparation and characterization of hyperbranched polystyrene nanocomposite synthesized by living radical polymerization and solution intercalation method

a copolymer of styrene and methyl styrene was synthesized by nitroxide - mediated “living” free radical polymerization )nmp). n-bromosuccinimide was used as a brominating agent to obtain a copolymer with bromine as its end group. this brominated copolymer was used as macro initiators for atom transfer  radical  polymerization  (atrp).  chemical  modifcation  of  the  clay  and transformation of this inorganic material to an organophilic clay was carried out by cation exchange reaction between the clay and hexadecyl trimethyl ammonium chloride salt in deionized water by mechanical stirring. preparation of nanocomposite was carried out by solution intercalation method. the structures of the terpolymer and other compounds were investigated by 1h nmr, gpc, ftir, sem, tem and xrd methods and their thermal stability was examined by tga analyses.