| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
Virtual Lightning Session |
| 제목 |
Conformational Change of Polystyrene at Film Surface after Contact with a Different Surface |
| 초록 |
Adhesion is a molecular phenomenon that an adherend surface contacts with a different material surface. To obtain a better understanding of the molecular event, we here examined the conformational change of polystyrene (PS) chains at the film surface after contacting with a hydrophobic or hydrophilic surface using sum-frequency generation spectroscopy. When PS chains contacted with the hydrophobic n-octyldimethylchlorosilane (ODS) surface, the conformational change was not clearly discerned. On the other hand, when they contacted with the hydrophilic quartz surface, the local conformation was changed with time even at room temperature. This can be explained in terms of the enhanced surface molecular motion of PS and minimizing the free energy at the interface. Finally, the orientational dynamics of phenyl groups was analyzed on the basis of Ngai’s coupling theory. The result indicates that the intermolecular cooperativity was less at the PS/quartz interface than in the bulk. |
| 저자 |
Rei Harada, Daisuke Kawaguchi, Keiji Tanaka
|
| 소속 |
Kyushu Univ. |
| 키워드 |
- |
| E-Mail |
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