| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 가을 (11/03 ~ 11/05, 대구 엑스코(EXCO)) |
| 권호 |
25권 2호 |
| 발표분야 |
포스터-고분자 |
| 제목 |
Effect of Molecular Weight on the Morphology of Bottlebrush Block Copolymer Particles |
| 초록 |
The chain-rigidities and the molecular weights of block copolymers (BCPs) can strongly affect their self-assembly behavior, particularly when the BCPs are under confinement. We investigate the self-assembly of bottlebrush BCPs (BBCPs) in three-dimensional confinements. A series of symmetric BBCPs consisted of polystyrene (PS) and polylactide (PLA) side-chains that grafted onto the polynorbornene (PNB) backbone are synthesized with different degrees of polymerization of the PNB (NPNB). Morphological transitions from onion into ellipsoid particles occur as the NPNB of the BBCP increases, which is also predicted from simulations. Furthermore, we investigated the morphological evolutions of BBCP particles, and only ellipsoid particles exhibit the unique axial development of ring-like lamellae domains on the particle surface, followed by the radial propagation into the particle center. Finally, the shape-anisotropies of the ellipsoid particles are analyzed as a function of particle size. |
| 저자 |
권승호1, 김은지1, 신재만2, 허수미3, 김정곤4, 김범준1
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| 소속 |
1KAIST, 2숭실대, 3전남대, 4전북대 |
| 키워드 |
block copolymer particle; bottlebrush polymer; molecular weight; chain-rigidities; particle shape; ellipsoidal particle; onion-like particle
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| E-Mail |
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