| 학회 |
한국고분자학회 |
| 학술대회 |
2022년 봄 (04/06 ~ 04/08, 대전컨벤션센터) |
| 권호 |
47권 1호 |
| 발표분야 |
고분자합성 |
| 제목 |
Morphological diversity from the solution self-assembly of block copolymer blends containing high molecular-weight hydrophobic blocks |
| 초록 |
Self-assembled structures of high molecular-weight BCP structures can be prematurely settled to local energy minima without reaching a time-averaged equilibrium, which results in the emergence of intriguing morphologies such as three-dimensional (3D) micellar networks. This non-ergodic behavior has been pronounced in binary blends of BCPs differing their molecular weights. Here we report the solution self-assembly of the blends of two branched-linear BCPs sharing chemistries of both polymer blocks but differing molecular weights of hydrophobic blocks. We show that a progressive transition of morphologies from polymer hexosomes and cubosomes to 3D micellar networks, short cylinders, and spherical micelles fueled by the increase of the composition of a lower MW BCP in the blend. The labeling of the micellar networks suggested that the lower molecular-weight BCPs were primarily located at the sites having high interfacial energy to stabilize the complex nanostructures. |
| 저자 |
이수정, 김경택
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| 소속 |
서울대 |
| 키워드 |
Solution self-assembly; Hexosome; Polymer cubosomes; Worm-like Micelle; Controlled radical polymerization; binary blend; Nonergodicity
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| E-Mail |
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