| 학회 |
한국고분자학회 |
| 학술대회 |
2020년 가을 (10/05 ~ 10/08, 부산컨벤션센터(BEXCO)) |
| 권호 |
45권 1호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Preparation of highly self-healable polyurethane using polyols with blocky segments of imide methacrylate |
| 초록 |
In this study, a new type of crosslinked polyurethane is prepared for highly enhanced self-healing ability. Polyols with blocky segments of n-(phthalimido) ethyl methacrylate are first synthesized by reversible-radical addition fragmentation (RAFT) polymerization. The resulting polyols are then reacted crosslinker with multiple isocyanates to synthesized self-healable crosslinked polyurethanes (shPUs). To confirm the self-healing properties of shPUs, polyols with no imide groups are reacted with crosslinker to prepare conventional crosslinked polyurethanes (cPUs) as a reference. Interestingly, shPUs demonstrate remarkably enhanced self-healing ability compared to cPUs. FT-IR analysis reveals that the unique supramolecular network induced by strong hydrogen bonding interaction between urethane groups and serially connected imide groups in polyurethane. The self-healing and mechanical properties of samples are characterized by using single scratch analysis and universal tensile machine. |
| 저자 |
박희정1, 이동현1, 홍성우2
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| 소속 |
1단국대, 2한국생산기술(연) |
| 키워드 |
Block Copolymer; Self-haling; Crosslinked Polyurethane; Imide
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| E-Mail |
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