| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
Korea-Australia Joint Symposium: Next Generation Polymer Science and Technology (English) |
| 제목 |
The Long and the Short of Polymer Grafting - Exploring the Limits and Quantification of the ‘Grafting-to’ Approach |
| 초록 |
Polymers covalently attached to surfaces can exhibit different confirmations, depending on the distance amongst tethering sites which is described by the grafting density σ. By functionalisation of a quartz crystal microbalance sensor via the ‘grafting-to’ approach of PMMA, a grafting density determination was established demonstrating that grafting a distribution of polymer chains onto an interface critically affects the shape of the distribution, with shorter chains being preferentially attached. The preferred surface attachment of shorter chains was underpinned by single-molecule force spectroscopy measurements, establishing the preferential grafting factor, κ, which allows to predict the molar mass distribution of polymers on the surfaces compared to the initial distribution in solution. Application of poor solvents is proven to be beneficial for the ‘grafting-to’ approach. The shorter polymer chains are preferentially grafted onto the surface, leading to a distortion effect between the molar mass distribution in solution and on surfaces which effect is significantly higher for better solvent quality than for poorer solvent quality. |
| 저자 |
Leonie Barner1, Lukas Michalek2, Kai Mundsinger3, Christopher Barner-Kowollik4
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| 소속 |
1School of Chemistry, 2Physics and Mechanical Engineering, 3Institute for Future Environments, 4Queensland Univ. of Technology (QUT) |
| 키워드 |
- |
| E-Mail |
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