3 years ago

Hydrogel with Ultrafast Self-Healing Property Both in Air and Underwater

Hydrogel
with Ultrafast Self-Healing Property Both in Air and Underwater
Wan-Jun Hao, Lei Jiang, Wei-Peng Chen, Xing-Lin Guo, De-Zhao Hao
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.

Publisher URL: http://dx.doi.org/10.1021/acsami.7b17118

DOI: 10.1021/acsami.7b17118

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