论文部分内容阅读
Diblock copolymers containing polystyrene (PSt) andpolybutyl methacrylate (PBMA)segnents and random coplymer of styrene (St) and butyl methacrylate (BMA) havebeen prepared by atom transfer radical polymerizanon (ATRP). Diblock copolymers ofBAN and St with predetermined molecular weight (1× 104ed.5 × 104)and narrowermolecular weight distribution(1.25～1.5) were obained The random copolymercompositions were determined by 1HNMR spectroscopy and the reactivity ratios wereevaluated by the extended Kelen-Tudos method to be γst=0.91, γBMA=0.32.
Diblock copolymers containingBAN and St with predetermined molecular weight (1 × Diblock copolymers containing polystyrene (PSt) andpolybutyl methacrylate (PBMA) segnentsand random coplymer of styrene (St) and butyl methacrylate (BMA) havebeen prepared by atom transfer radical polymerizanon (ATRP) 104ed.5 × 104) and narrowermolecular weight distribution (1.25-1.5) were obained The random copolymer compositions were determined by 1H NMR spectroscopy and the reactivity ratios wereevaluated by the extended Kelen-Tudos method to be γst = 0.91, γBMA = 0.32.