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Self-Hydrophobization in a Dynamic Hydrogel for Creating Nonspecific Repeatable Underwater Adhesion

  • Abstract 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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Document Type:Article
Author:Lu Han, Menghao Wang, Lizbeth Ofelia Prieto-LópezORCiD, Xu Deng, Jiaxi CuiORCiD
Parent Title (English):Advanced Functional Materials
First Page:1907064_1
Last Page:1907064_9
Year of first Publication:2020
Release Date:2022/11/18
Impact:18.808 (2020)
Funding Information:National Natural Science Foundation of China (3180079821603026) China Postdoctoral Science Foundation (2017M622997) Bundesministerium für Bildung und Forschung (031A360D) Postdoctoral Research Foundation of China (2016M592651) Max-Planck-Gesellschaft
Open Access:Open Access
Signature:INM 2020/015
Licence (German):License LogoCreative Commons - CC BY-NC - Namensnennung - Nicht kommerziell 4.0 International