Cylindrical microdomains using blends of block copolymers with hydrogen bonding interactions
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초록
내용
The binary blend of block copolymers containing poly(2-vinylpyridine) and poly(hydroxystyrene) forms hydrogen bonding between the blocks, and can show unexpected microdomains that cannot be obtained in neat block copolymer. In this study, we prepared the binary blend of polystyrene-block-poly(2-vinylpyridine) (PS-b-P2VP) and polystyrene-block-poly(hydroxylstyrene) (PS-b-PHS). The volume fraction of PS of the block coplymers was about 0.6. PS-b-PHS were prepared via the hydrolysis reaction of PS-b-poly(4-tert-butoxy styrene) copolymers. The blends showed cylindrical microdomains, the volume fraction of cylinders of which was 0.63, due to the interface curvature change by favorable hydrogen bonding between P2VP and PHS blocks.