Synthesis of Novel Polyamide-Hyperbranched Polymers via Self Condensing Atom Transfer Radical Polymerization

摘要

Novel inimer was synthesized from p-amino phenol via successive preparative methods by using both bromoisobutyrylbromide and acry-loyl chloride.The new inimer was well characterized via Infrared Spectra(IR)and ~1H nuclear magnetic resonance(NMR).New hyperbranched polyamide(H1)was prepared via Atom Transfer Radical Polymerization(ATRP).Several reaction conditions(ligands,solvents,temperatures,etc.)were studied.However,the N,N,N',N"-pentamethyldiethylenetriamine(PMDETA)/CuBr catalytic system showed good results in toluene at 100°C.Three arm star methyl-methacrylate(MMA)homopolymers reacted with(H1)in different percentages to form copolymers with low polydispersity values,especially at 1:115 for poly MMA:H1.The formed polymers were characterized via Gel Permeation Chromatography(GPC),~11HNMR,thermal analyses,and Transmission Electron Microscopy(TEM).