期刊
ACS APPLIED MATERIALS & INTERFACES
卷 10, 期 1, 页码 1258-1265出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b17118
关键词
ultra-fast; dynamic borate bond; smart self-healing; underwater; double-network hydrogels
资金
- National Research Fund for Fundamental Key Projects [2012CB933800, 2013CB933000, 2012CB934100]
- National Natural Science Foundation [21121001, 21421061, 21434009, 21504098, 21127025, 21175140, 51073165, 20974113]
- Key Research Program of the Chinese Academy of Sciences [KJZD-EW-M01]
- National High Technology Research and Development Program of China (863 Program) [2013AA031903]
- Major projects in Hainan Province [ZDZX2013015]
- Major science and technology support project in 12th Five-Year by Ministry of Science and Technology [2012BAJ02B08-3]
Self-healing hydrogels have a great potential application in 3D printing, soft robotics, and tissue engineering. There have been a large number of successful strategies for developing hydrogels that exhibit rapid and autonomous recovery. However, developing a gel with an excellent self-healing performance within several seconds is still an enormous challenge. Here, an ultrafast self-healing hydrogel based on an agarose/PVA double network (DN) is presented. The gel utilizing a dynamic borate bond exhibits 100% cure in strength and elongation after healing for 10 s in air, and this hydrogel shows an excellent self-healing property underwater as well. In addition, the agarose/PVA DN hydrogel exhibits a smart self-healing property for an in situ priority recovery, ensuring that the shape and the function are the same as those of the original one. With the combination of self-healing properties, such a hydrogel could be applied to a board range of areas.
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