| 학회 |
한국화학공학회 |
| 학술대회 |
2018년 가을 (10/24 ~ 10/26, 대구 EXCO) |
| 권호 |
24권 2호, p.1069 |
| 발표분야 |
고분자(Polymer) |
| 제목 |
Domain Structures of P3DDT-b-P2VP Block Copolymers Depend on Regioregularit |
| 초록 |
Phase separation of conjugated–amorphous block copolymers (BCPs) is mainly determined by interplay between Flory–Huggins interaction (χ), liquid crystalline (LC) interaction and crystallization. In particular, the strong LC interaction and crystallization can provide morphological richness, but often suppress the formation of ordered domains. Therefore, tuning the LC and crystalline behavior can be a key to form desirable nanostructures of conjugated–amorphous BCPs. Here, we studied morphologies of poly(3-dodecylthiophene)-block-poly(2-vinylpyridine) (P3DDT-b-P2VP) depending on regioregularity (RR), which determines the LC and crystalline behavior of conjugated polymer. Above the melting temperature, we observed a clear transition in domain spacing of ordered structures as the RR decreased from 94% to 85%. This could be attributed to a change in chain-packing configuration due to the reduction in LC interaction. Upon cooling, the BCPs with 94% of RR showed morphology deformation driven by strong crystallization whereas the melt morphologies of lower RR BCPs were almost not affected. |
| 저자 |
김진성1, 한정훈1, 김영권1, 박현정1, Jonathan Coote2, Gila Stein2, 김범준1
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| 소속 |
1KAIST, 2Univ. of Tennessee |
| 키워드 |
고분자합성; 고분자물성
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| E-Mail |
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| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
