| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
Virtual Lightning Session |
| 제목 |
Direct Observation of Thermal Motion for Isolated Poly(tert-butyl methacrylate) Chains on Solid Surfaces |
| 초록 |
A better understanding of the hierarchical dynamics of polymers on a solid surface is of importance for improving the material designs of polymer nanocomposites as well as thin film devices. We directly observed the thermal motion of isolated poly(tert-butyl methacrylate) (PtBMA) chains on hydrophobic and hydrophilic silicon substrates using atomic force microscopy. While the center-of-mass diffusion of chains was not observed on the hydrophobic hydrogen-passivated silicon substrate, such was on the hydrophilic hydroxy-terminated silicon substrate. The diffusion coefficient for chains on the hydrophilic substrate was (1.35 ± 0.08) x 10-14 cm2·s-1. The mobility difference of PtBMA chains on the two substrates could be explained in terms of the difference of the interfacial free energy via the existence of the adsorbed water layer. |
| 저자 |
Masayuki Kawano, Yuma Morimitsu, Yukari Oda, Daisuke Kawaguchi, Keiji Tanaka
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| 소속 |
Kyushu Univ. |
| 키워드 |
- |
| E-Mail |
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