| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
A highly self-healable polyurethane based on urea oligomer with excellent long-term stability |
| 초록 |
A highly self-healable polyurethane based on urea oligomer (PUUo) is synthesized and its properties are examined in this study. A polyol, a urea oligomer with isocyanate group at both ends, and crosslinker containing isocyanate groups are blended and the blended precursor is reacted at elevated temperature to generate PUUo. Compared with conventional polyurethane-urea (cPUU) which is prepared through one-pot synthesis, the blended precursor of PUUo shows outstanding long-term stability at room temperature. It is also noted that PUUo has better self-healing properties compared with polyurethane based on single molecule with only two urea groups. This strongly demonstrates that the self-healable polyurethane with urea groups can maximize its self-healability by incorporating large molecule containing multiple urea groups which are serially connected. FT-IR spectroscopy is applied to propose the effective self-healing mechanism of PUUo. |
| 저자 |
최기원1, 강정순1, 홍평화2, 김진실2, 문경민2, 김기승2, 이성구2, 홍성우2, 고민재1
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| 소속 |
1한양대, 2한국생산기술(연) |
| 키워드 |
self-healing; polyurethane-urea; urea oligomer; hydrogen bonding; long-term stability
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| E-Mail |
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