| 초록 |
Two kinds of amphiphilic AB-type diblock copolymers of poly(acrylic acid)-b-polystyrene (PAA-b-PS) were synthesized by RAFT polymerization. The aggregates, star-like micelles and crew-cut aggregates, consisting of a polystyrene core and a poly(acrylic acid) corona, were prepared by direct dissolution of the copolymer in a selective solvent. Subsequently, core-shell interface cross-link was governed by RAFT polymerization using divinylbenzene as a crosslinking agent. The formation of block copolymers was characterized by 1H NMR, FT-IR and GPC. The spherical morphology and the size of the core-cross-linked micelles were observed in TEM, SEMand DLS analysis. |
