论文部分内容阅读
A well-defined,A2B-type,centipede-like copolymer of styrene and methyl methacrylate(PS-PS-PMMA) was synthesized by the combination of living anionic polymerization and atom transfer radical polym-erization(ATRP) . The synthetic approach involves the coupling reaction of polystyrene(PS) backbone bearing 1,1-diphenylethene(DPE) pendant groups,produced by ATRP and Wittig reaction,with living polystyryllithium(PSLi) ,and subsequent polymerization of the resulting 1,1-diphenylmethyl anions with methy methacrylate. The centipede-like copolymer was characterized by 1H NMR,IR,SEC,SLS,and DSC measurements.
A well-defined, A2B-type, centipede-like copolymer of styrene and methyl methacrylate (PS-PS-PMMA) was synthesized by the combination of living anionic polymerization and atom transfer radical polym-erization (ATRP) coupling reaction of polystyrene (PS) backbone bearing 1,1-diphenylethene (DPE) pendant groups, produced by ATRP and Wittig reaction, with living polystyryllithium (PSLi), and subsequent polymerization of the 1,1-diphenylmethyl anions with methy methacrylate. The centipede-like copolymer was characterized by 1 H NMR, IR, SEC, SLS, and DSC measurements.