期刊
ADVANCED FUNCTIONAL MATERIALS
卷 30, 期 7, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201907064
关键词
dynamic hydrogel; long-term stable adhesion; nonspecific adhesion; repeatable adhesion; underwater adhesive
类别
资金
- National Natural Science Foundation of China [31800798, 21603026]
- China Postdoctoral Science Foundation [2017M622997]
- Bundesministerium fur Bildung und Forschung (BMBF) [031A360D]
- Max-Planck-Gesellschaft (Max Planck Partner Group UESTC-MPIP)
Adhesive hydrogels are widely applied for biological and medical purposes; however, they are generally unable to adhere to tissues under wet/underwater conditions. Herein, described is a class of novel dynamic hydrogels that shows repeatable and long-term stable underwater adhesion to various substrates including wet biological tissues. The hydrogels have Fe3+-induced hydrophobic surfaces, which are dynamic and can undergo a self-hydrophobization process to achieve strong underwater adhesion to a diverse range of dried/wet substrates without the need for additional processes or reagents. It is also demonstrated that the hydrogels can directly adhere to biological tissues in the presence of under sweat, blood, or body fluid exposure, and that the adhesion is compatible with in vivo dynamic movements. This study provides a novel strategy for fabricating underwater adhesive hydrogels for many applications, such as soft robots, wearable devices, tissue adhesives, and wound dressings.
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