期刊
RSC ADVANCES
卷 5, 期 82, 页码 66871-66878出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra11915d
关键词
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资金
- National Natural Science Foundation of China [51273063, 21476143, 21306049]
- Fundamental Research Funds for the Central Universities
- higher school specialized research fund for the doctoral program [222201313005, 222201314029]
- 111 Project Grant [B08021]
- Open Project of State Key Laboratory of Chemical Engineering [SKL-ChE-14C01]
- Firmenich
To mimic the underwater adhesion of marine mussels, a bioadhesive has been prepared with a poly(acrylic acid) backbone functionalized with 30% catechol appendants. The polyelectrolyte chains can be reversibly crosslinked through metal chelation and irreversibly gelled by oxidative crosslinking. Surprisingly, the reported poor metal chelator Zn2+ not only imparts this injectable adhesive with superior adhesion after the formation of coacervation compared to the one chelated by a stronger metal crosslinker (e.g. Fe3+), but also generates good mechanical performance of the self-healing hydrogel after the oxidation of catechol groups with a pH trigger. Such a pH-responsive material with strong adhesion and good self-healing property at different conditions could be an ideal candidate in biomedical adhesion and tissue engineering.
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