Preparation of Some Br-ended MMA Three Arm Star Block Copolymers via ATRP and Other Amphiphilic Hydroxyl Ended Ones

摘要

MMA-St,MMA-VA,MMA-St-MA,and MMA-VA-n-BuMA three arm star block copolymers were prepared via ATRP by using trifunctional initiator.TMED CuBr catalytic system was involved in such polymerization processes at 90°C.Subsequent transformation of the bromine ends to hydroxyl ones were carried out on MMA-St and MMA-VA copolymers as two different examples,and two variable routes were involved in the transformation processes using ethanolamine and silver,respectively.