| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
대학원생 구두발표(발표15분) |
| 제목 |
Stabilization of Low Symmetry Morphology in Block Copolymer Electrolytes |
| 초록 |
We investigated phase behavior of acid-tethered block copolymers containing nonstoichiometric ionic liquids to underpin a role of long-range interactions in determining morphologies of block copolymer electrolytes. Radical phase shifts between A15 and lamellar structures were observed for sulfonic acid-tethered block copolymers comprising the ionic liquids. The molar ratio of cationic and anionic moieties was a key to cause the unique phase transitions, where the excess amount of cations in ionic domains stabilized the low symmetry morphology. It is in contrary to the common wisdom established for uncharged block copolymers. Molecular dynamics simulations suggested that the formation of thin ionic shell layers at the micellar core-corona interfaces played a crucial role in stabilizing the A15 structures for block copolymer electrolytes. The development of A15 phases was connected to the enhanced ionic conductivities, suggesting a new avenue for developing advanced polymer electrolytes. |
| 저자 |
민재민, 박문정
|
| 소속 |
포항공과대 |
| 키워드 |
Block copolymer electrolytes; Self-assembly; A15 structure
|
| E-Mail |
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