| 학회 |
한국고분자학회 |
| 학술대회 |
2010년 가을 (10/07 ~ 10/08, 대구 EXCO) |
| 권호 |
35권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Spontaneous and specific activation of chemical bonds in macromolecular fluids |
| 초록 |
Mechanical activation of chemical bonds typically involves the application of external forces which implies a broad distribution of bond tensions. We demonstrate that controlling the flow profile of a macromolecular fluid generates and delineates mechanical force concentration enabling a hierarchical activation of chemical bonds on different length scales from the macroscopic to the molecular. Bond tension is spontaneously generated within brush-like macromolecules as they spread on a solid substrate. The molecular architecture creates an uneven distribution of tension in the covalent bonds, leading to spatially-controlled bond scission. By controlling the flow rate and the gradient of the film pressure, one can sever the flowing macromolecules with knife-like precision. Specific chemical bonds are activated within distinct macromolecules located in a defined area of a thin film. |
| 저자 |
박인선, 김중현
|
| 소속 |
연세대 |
| 키워드 |
brush polymer; chain scission
|
| E-Mail |
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