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Nature-Inspired Hydrogel Network for Efficient Tissue-Specific Underwater Adhesive.

Yajun Chen1, Xue Guo1, Alfred Mensah1

  • 1Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi 214122, People's Republic of China.

ACS Applied Materials & Interfaces
|December 13, 2021
PubMed
Summary

Researchers developed a new hydrogel adhesive inspired by mussels for strong, selective underwater adhesion to biological tissues. This robust material also shows potential for wound healing applications.

Keywords:
antibacterialcolor changehydrogel adhesiveselective wet adhesionsustained drug release

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Area of Science:

  • Biomaterials Science
  • Adhesion Science
  • Tissue Engineering

Background:

  • Efficient and selective underwater adhesives are crucial for biomedical applications.
  • Designing hydrogel adhesives that bond specifically to biotic surfaces remains a significant challenge.

Purpose of the Study:

  • To develop robust and specific hydrogel adhesives for underwater biomedical applications.
  • To create a multifunctional material for wound healing.

Main Methods:

  • Synthesized a hydrogel using poly(acrylic acid) grafted with N-hydroxysuccinimide ester (PAA-NHS ester), tea polyphenol (TP), chitosan (CS), and Al3+.
  • Incorporated curcumin-loaded electrospun nanofibers into the hydrogel to create a nanofibers-hydrogel composite (NF-HG).

Main Results:

  • The hydrogel demonstrated fast, specific, and repeatable underwater adhesion to various biological tissues (porcine skin, intestine, liver, shrimp).
  • The NF-HG exhibited pH-responsive color changes, sustained drug release, and good cell viability, indicating suitability for wound healing.

Conclusions:

  • The developed hydrogel adhesive effectively mimics natural adhesion mechanisms for robust underwater bonding.
  • The multifunctional NF-HG presents a promising novel material for advanced wound healing applications.