Barnacle inspired high-strength hydrogel for adhesive

Frontiers in Bioengineering and Biotechnology

Bioengineering and Biotechnology

Lei Jiang¹  Xingchao Li¹  Enfeng Yang¹  Dezhao Hao¹  Ye Tian² 

[1] CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China;School of Future Technology, University of Chinese Academy of Sciences, Beijing, China;CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China;School of Future Technology, University of Chinese Academy of Sciences, Beijing, China;Beijing Institute of Future Science and Technology on Bioinspired Interface, Beijing, China;

关键词: barnacle;    hydrogel;    bio-inspired;    phase separation;    under water and oil adhesive;   

DOI  :  10.3389/fbioe.2023.1183799

 received in 2023-03-10, accepted in 2023-03-17,  发布年份 2023

来源: Frontiers

【 摘 要 】

Barnacle exhibits high adhesion strength underwater for its glue with coupled adhesion mechanisms, including hydrogen bonding, electrostatic force, and hydrophobic interaction. Inspired by such adhesion mechanism, we designed and constructed a hydrophobic phase separation hydrogel induced by the electrostatic and hydrogen bond interaction assembly of PEI and PMAA. By coupling the effect of hydrogen bond, electrostatic force and hydrophobic interaction, our gel materials show an ultrahigh mechanical strength, which is up to 2.66 ± 0.18 MPa. Also, benefit from the coupled adhesion forces, as well as the ability to destroy the interface water layer, the adhesion strength on the polar materials can be up to 1.99 ± 0.11 MPa underwater, while that of the adhesion strength is about 2.70 ± 0.21 MPa under silicon oil. This work provides a deeper understanding of the underwater adhesion principle of barnacle glue. Furthermore, our bioinspired strategy would provide an inspiration for the fabrication of high mechanical gel materials, and the rapid strong adhesive used in both water and organic solvents.

【 授权许可】

Unknown   
Copyright © 2023 Hao, Li, Yang, Tian and Jiang.