| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 봄 (04/07 ~ 04/09, 대전컨벤션센터) |
| 권호 |
46권 1호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
Molecular Weight Dependent Morphological Transition of Bottlebrush Block Copolymer Particles |
| 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, 이규선2, 박주혜3, 허수미3, 김정곤2, 김범준1
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| 소속 |
1KAIST, 2전북대, 3전남대 |
| 키워드 |
block copolymer particle; bottlebrush polymer; molecular weight; onion-like particle; ellipsoidal particle; particle shape
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| E-Mail |
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