期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 39, 期 6, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201700678
关键词
in situ ATR; mutiple metal-ligand crosslinks; polyurethane; superior self-healing
资金
- National Natural Science Foundation of China [51433006]
- Young Talent Team Science and Technology Innovation Project of Sichuan Province [2016TD0010]
- China Scholarship Council
A metal-ligand crosslinked internal self-healing polyurethane is developed using low-cost and commercially available compounds. The mechanical, photoluminescent, and self-healing properties can be governed by incorporating multiple metal-ligand crosslinks with weak and strong coordination bonds and varying the metal ion. In-situ attenuated total reflectance Fourier transform infrared spectroscopy reveals that the metal-ligand bond is cleaved during the damage process while metal ion is still coordinated with the ligand by stronger metal-pyridyl interaction. The multiple metal-ligand coordination facilitates the crosslinks to be fully reformed during the repairing process, leading to the superior self-healing property.
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