| 초록 |
Due to the different affinity of poly(4-vinylphenol) and poly(vinyl alcohol) with water, the diblock copolymer comprising of these two polymers can be self-assembled into core-shell type particle. In this study, we synthesized poly(4-vinylphenol)-b-poly(vinyl alcohol) diblock copolymer and studied the core-shell structure in water/DMSO mixture. The poly(4-vinylphenol) and the poly(vinyl alcohol) blocks were obtained by hydrolyzing their precursor, poly(4-acetoxystyrene) and poly(vinyl acetate), respectively, because the direct polymerization of 4-vinylphenol and vinyl alcohol was not feasible. In water/DMSO mixed solvent condition, we confirmed the core-shell structure in which poly(4-vinylphenol) block acts as a core and poly(vinyl alcohol) block acts as a shell. Interestingly, the core-shell particle with the inverted composition, poly(vinyl alcohol) core and poly(4-vinylphenol) shell, was formed in the THF/DMSO mixed solvent system. |
