| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
Molecular Exchange Kinetics in Complex Coacervate Core Micelles:Role of Associative Interaction |
| 초록 |
Complex coacervate core micelles (C3Ms) are formed by mixing of AB and A’B diblock copolyelectrolyte in an aqueous solution, where A and A’ are oppositely charged blocks, and B is PEO block. C3Ms has been investigated in applications such as reactor and vehicles due to charged nature of the core. However, much less is known about the kinetics of C3Ms. It is essential for stability and reproducibility. In this study, we investigated the chain dynamics of C3Ms using time-resolved small angle neutron scattering (TR-SANS). C3Ms were formed by a pair of functionalized poly(ethylene oxide-b-allyl glycidyl ether), including guanidinium, ammonium, and sulfonate. Associative ionic interaction is controlled by salt, and the observed rates at multiple salt concentrations are consolidated using time-salt superposition. Analytical relaxation function based on the sticky-Rouse model and the energetic barrier for chain pulling successfully describes the molecular exchange kinetics between C3Ms. |
| 저자 |
허태영1, 김소정2, Liwen Chen3, Anna Sokolova4, 이상우3, 최수형1
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| 소속 |
1홍익대, 2서울대, 3Rensselaer Polytechnic Institute, 4Australian Nuclear Science and Technology Organisation |
| 키워드 |
Complex coacervate core micelles; exchange kinetics; time-resolved small angle neutron scattering
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| E-Mail |
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