| 학회 |
한국고분자학회 |
| 학술대회 |
2007년 가을 (10/11 ~ 10/12, 일산킨텍스) |
| 권호 |
32권 2호 |
| 발표분야 |
고분자 가공/복합재료 |
| 제목 |
Rheokinetic evaluation of self-healing agents polymerized by Grubbs catalyst embedded in various thermosetting systems |
| 초록 |
In self-healing polymers and composites, the activity of the embedded chemical catalyst within the thermosetting matrix is critical to healing efficiency. Rheological behavior of ring-opening metathesis polymerization (ROMP)-based healing agents, triggered by 1st or 2nd generation Grubbs catalysts that have been suspended in various thermosetting resins, was investigated using an oscillatory parallel plate rheometer. Gel times were determined from the crossover of storage and loss moduli vs. time curves to indicate the reaction activity. And 1st generation Grubbs catalyst triggered reaction faster than 2nd generation. It is suggested that the dissolution rate of the catalyst by the healing agent is an important factor in determining the overall ROMP reaction rate in situ. Optical and scanning electron microscopic observations showed supportive evidence. These results indicate that the self-healing methodology can be expanded to other high performance polymer matrices. |
| 저자 |
유 성1, Xia Sheng2, 이종근3, Michael R. Kessler1
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| 소속 |
1국립금오공과대, 2Dept. of Materials Science and Engineering, 3Iowa State Univ. |
| 키워드 |
Self-healing; Rheokinetics; Grubbs catalyst; Thermosetting systems
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| E-Mail |
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