Block polymer monolith with kinetically induced 3D ordered morphology via polymerization-induced microphase separation entropically driven
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초록
내용
Polymerization-induced microphase separation (PIMS) is a versatile method to produce 3D bicontinuous nanostructure. Subsequent etching of a specific domain could make the 3D bicontinuous nanoporous materials which have huge potential for separation, catalyst support, adsorbent, etc. Although the properties of nanoporous materials have a close relation with the shape of the morphologies such as lamella, cylinder, and gyroid, the kinetic capture of phase during development of morphologies prevents access to the ordered morphologies. To overcome the kinetic issue and reach the ordered state, we introduced the high χ monomer which could facilitate the phase separation faster. The reversible addition–fragmentation chain transfer (RAFT) polymerization was used for the synthesis of block copolymers with or without the high χ monomer. Depending on the high χ monomer, we observed the kinetically captured ordered morphologies.