期刊
SCIENCE CHINA-CHEMISTRY
卷 59, 期 12, 页码 1554-1560出版社
SCIENCE PRESS
DOI: 10.1007/s11426-016-0251-y
关键词
self-healing; hyperbranched polytriazole; metal-free click polymerization; film
资金
- National Natural Science Foundation of China [21525417, 21490571, 21222402]
- Ministry of Science and Technology of China [2013CB834702]
- National Program for Support of Top-Notch Young Professionals
- Fundamental Research Funds for the Central Universities [2015ZY013]
- Innovation and Technology Commission of Hong Kong [ITC-CNERC14SC01]
- Guangdong Innovative Research Team Program [201101C0105067115]
The last decade has witnessed the quick develop of self-healing materials. As a newborn strategy, the alternative of irreversible covalent bond formation is, however, to be further developed. In this paper, self-healing hyperbranched poly(aroxycarbonyltriazole) based on such mechanism were prepared by our developed metal-free click polymerization of simplified dipropiolate and triazide. Thanks to their excellent processability and film-forming ability, high quality homogeneous films free from defects were obtained by casting. The cut films could be healed by stacking or pressing the halves together at room temperature and elevated temperature. Thus, this design concept for self-healing materials should be generally applicable to other hyperbranched polymers with reactive groups on their peripheries.
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