| 초록 |
We present the syntheses of Poly[PEG methacrylate)]-b-[Poly(methacrylic acid)-r-Poly(N-isopropylacrylamide)], [PPEGMA-b-(PMAA-r-PNIPAAm)], copolymers through the reversible addition-fragmentation chain transfer (RAFT) polymerization. PMAA and PNIPAAm are well-known functional polymers that are sensitive to pH and temperature, respectively. The resulting copolymers can form a core/shell-type self-assembled nanostructure in aqueous solution depending on the solution temperature and pH due to the characteristic LCST (Lower Critical Solution Temperature) of the temperature-sensitive block and the ratio between the corresponding block length, further allowing for the facile tuning of the LCST. |
