| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Ultrasonication of Brush Polymers: Influence of Grafting Density on Mechanochemical Reactivity |
| 초록 |
The influence of the brush polymers' grafting density on their mechanochemical reactivity was explored. Precise controlled Ring-Opening Metathesis Polymerization of norbornene-based macromonomers (and small molecule comonomers) provided brush polymers with varying grafting density. The statistical copolymer architectures were successfully characterized by multi-angle light scattering (MALS) analysis and atomic force microscopy (AFM) imaging. Based on the ultrasonication results of these brush polymers, we could figure out that the grafting density affected backbone scission as well as arm scission (side chain cleavages from polymer backbones). Interestingly, the different types of side chains (polystyrene vs. poly(methyl methacrylate)) exhibited opposite trends in arm scission and grafting density, presumably due to the different conformation in solution. Molecular dynamics simulations supported the origin of different phenomena. |
| 저자 |
노진경1, Gregory Peterson2, 민영하1, 양상희3, 이원보1, 최태림1
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| 소속 |
1서울대, 2Incheon National Univ., 3Univ. of Minnesota |
| 키워드 |
Polymer synthesis; Brush polymer; Polymer mechanochemistry; Grafting density
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| E-Mail |
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