Abstract
The synthesis of ABC triblock copolymer poly(ethylene oxide)- block-poly(methyl methacrylate)- block-polystyrene (PEO- b-PMMA- b-PS) via atom transfer radical polymerization (ATRP) is reported. First, a PEO–Br macroinitiator was synthesized by esterification of PEO with 2-bromoisobutyryl bromide, which was subsequently used in the preparation of halo-terminated poly(ethylene oxide)- block-poly(methyl methacrylate) (PEO- b-PMMA) diblock copolymers under ATRP conditions. Then PEO- b-PMMA- b-PS triblock copolymer was synthesized by ATRP of styrene using PEO- b-PMMA as a macroinitiator. The structures and molecular characteristics of the PEO- b-PMMA- b-PS triblock copolymers were studied by FT-IR, GPC and 1H NMR.
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