| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
Morphology Control of Bottlebrush Block Copolymer Particles by Controlling the Molecular Weight |
| 초록 |
The molecular weights and chain-rigidities of block copolymers can strongly influence their self-assembly behavior, particularly when the block copolymers are under confinement. We investigate the self-assembly of bottlebrush block copolymers (BBCPs) confined in evaporative emulsions with a series of symmetric BBCPs with different degrees of polymerization of the polynorbornene (PNB) backbone (NPNB). Morphological transitions from onion-like concentric particles into striped ellipsoids occur as the NPNB of the BBCP increases, which is also predicted from simulations of BBCP droplets by an implicit solvent model. Furthermore, we investigated the morphological evolutions of ellipsoidal BBCP particles having 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 ellipsoidal BBCP particles are analyzed as functions of NPNB and particle volume. |
| 저자 |
김은지1, 신재만1, 도태양2, 이규선3, 허수미2, 김정곤3, 김범준1
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| 소속 |
1KAIST, 2전남대, 3전북대 |
| 키워드 |
bottlebrush block copolymer; block copolymer particles; molecular weight; backbone length; ellipsoid particles; interfacial energy; bending penalty; nematic effect
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| E-Mail |
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