| 초록 |
Due to the different characteristics of poly(4-vinylphenol and poly(vinyl alcohol), the diblock copolymers consisting of these two polymer chains are expected to show an interesting self-assembly behavior in solutions. In this study, we synthesized poly(4-vinylphenol)-b-poly(vinyl alcohol) diblock copolymers and studied the formation of core-shell structures in mixed solvent systems. The poly(4-vinylphenol) and the poly(vinyl alcohol) blocks were obtained by hydrolyzing their precursors, poly(4-acetoxystyrene) and poly(vinyl acetate). 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. In contrast, 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. Interestingly under the condition of THF/DMSO mixed solvent, the vesicle likes morphology was also observed. |
