Mussel Inspired Trigger-Detachable Adhesive Hydrogel

Chenlong Wang, Xiaohan Gao, Feng Zhang, Wanting Hu, Zhuxian Gao, Yuqi Zhang, Mingyu Ding, Qionglin Liang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

Adhesion to many kinds of surfaces, including biological tissues, is important in many fields but has been proved to be extremely challenging. Furthermore, peeling from strong adhesion is needed in many conditions, but is sometimes painful. Herein, a mussel inspired hydrogel is developed to achieve both strong adhesion and trigger-detachment. The former is actualized by electrostatic interactions, covalent bonds, and physical interpenetration, while the latter is triggered, on-demand, through combining a thixotropic supramolecular network and polymer double network. The results of the experiments show that the hydrogel can adhere to various material surfaces and tissues. Moreover, triggered by shear force, non-covalent interactions of the supramolecular network are destroyed. This adhesion can be peeled easily. The possible mechanism involved is discussed and proved. This work will bring new insight into electronic engineering and tissue repair like skin care for premature infants and burn victims.

Original languageEnglish
Article number2200336
JournalSmall
Volume18
Issue number21
DOIs
Publication statusPublished - 26 May 2022
Externally publishedYes

Keywords

  • bioadhesives
  • hydrogels
  • trigger-detachable
  • wet adhesion

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