含フッ素セグメントをもつブロックコポリマーの精密合成および水/有機層間を往復可能な高分子ミセルの創製

抄録

Reversible micelle transfer between water and organic solvents in response to temperature was achieved using diblock copolymers with a hydro- and oleophobic segment and a hydro- and oleophilic segment. The block copolymers were synthesized precisely through the living cationic polymerization of a fluorine-containing vinyl ether (VE) and an oxyethylene-containing VE. The fluorine-containing segment formed the core of the micelles, both in water and in ethyl acetate, because of its insolubility in both solvents. An oxyethylene-containing segment, which formed the corona of the micelles, was soluble in both solvents but changed the affinity to water depending on temperature. Thus, a diblock copolymer with oxyethylene-side chains of appropriate length was reversibly transferred to ethyl acetate at higher temperature and to water at lower temperature.