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Here we report the controlled synthesis of alternating copolymers by reversible addition-fragmentation chain transfer (RAFT) polymerization of hydroxy-functionalized vinyl ether (DEGV) and ethylmaleimide (EtMI) using dithiocarbonate derivative (CPDB) as the RAFT reagent. The resulting alternating copolymer poly[ethylmaleimide- alt -(diethylene glycol mono vinyl ether)] (poly(MalMI- alt -DEGV)) had a relatively narrow molecular weight distribution ( M  w / M  n &lt; 1.4). These polymers are fully soluble in cold water (5 °C) and an aqueous solution of poly(MalMI- alt -DEGV) became turbid upon heating (using an incident wavelength of 600 nm and 1.0 mg mL -1 (0.1 wt %) polymer concentration), indicating phase separation above the cloud point temperature ( T  cp ). The T  cp of the polymer solution ranged from 15-35 °C, depending on the molecular weight and molecular weight distribution of the polymer.

polymers

Synthesis of Well-Defined Alternating Copolymer Composed of Ethylmaleimide and Hydroxy-Functionalized Vinyl Ether by RAFT Polymerization and Their Thermoresponsive Properties