Synthesis and Characterization of Polymeric Nanoparticles Based on Polystyrene-block-Poly(4-vinylpyridine)
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내용
The shape and size of block copolymers can be easily controlled by self-assembly. It is also well known for the block copolymers to form nanoparticles for the applications such as catalysts, templates, storages, and chemical delivery systems. Here, we synthesized a block copolymer consisting of polystyrene (PS) and poly(4-vinylpyridine) (P4VP) via Reversible Addition Fragmentation chain Transfer(RAFT) polymerization. P4VP shows Low Critical Solution Temperature(LCST) behavior which can be used for efficient chemical loading and delivering by changing temperatures. The size of the nanoparticles was also controlled by adjusting the solvent ratio. We confirmed UV-vis spectroscopy to understand the aggregation point at which nanoparticles can be formed. And scanning electron microscopy(SEM) and transmission electron microscopy(TEM) were utilized to measure the size of nanoparticles.