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Related Experiment Video

Updated: Apr 20, 2026

Synthesis of Strong Adhesive Hydrogel, Gelatin O-Nitrosobenzaldehyde
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Alternating-current electrophoretic adhesion of biodegradable hydrogel utilizing intermediate polymers.

Taka-Aki Asoh1, Wataru Kawai1, Akihiko Kikuchi1

  • 1Department of Materials Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo 125-8585, Japan.

Colloids and Surfaces. B, Biointerfaces
|December 3, 2014
PubMed
Summary

Biodegradable hydrogels were successfully adhered using alternating-current (AC) electric fields and oppositely charged polymers. This novel AC electrophoretic adhesion method offers a simple way to create advanced hydrogel constructs.

Keywords:
AdhesionElectrophoresisHydrogelScaffold

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Area of Science:

  • Biomaterials Science
  • Polymer Chemistry
  • Biomedical Engineering

Background:

  • Biodegradable hydrogels are crucial in tissue engineering and drug delivery.
  • Achieving strong, controllable adhesion between hydrogel components is a significant challenge.
  • Existing methods often involve complex chemistries or external stimuli.

Purpose of the Study:

  • To develop a novel method for adhering anionic biodegradable hydrogels using alternating-current (AC) electric fields.
  • To investigate the use of oppositely charged water-soluble polymers as binders for hydrogel adhesion.
  • To explore the potential of AC electrophoretic adhesion for creating functional hydrogel constructs.

Main Methods:

  • Anionic dextran sulfate (DS) gels were adhered using cationic quaternary ammonium chitosan (TMC) as a binder.
  • Alternating-current (AC) electric fields were applied to induce electrophoretic adhesion.
  • The effect of AC waveform periodicity on adhesive strength was investigated.

Main Results:

  • Successful molecular suturing of two DS gels was achieved via AC electrophoretic adhesion with TMC.
  • Adhesive strength increased with increasing AC square wave periodicity.
  • Hydrogel constructs composed of DS microgels were readily prepared using this method.

Conclusions:

  • AC electric fields provide an effective means for adhering anionic biodegradable hydrogels.
  • The AC electrophoretic adhesion technique offers a simple and versatile approach for hydrogel assembly.
  • This method has potential applications in creating complex hydrogel-based materials for biomedical purposes.