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Related Experiment Video

Updated: May 21, 2025

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Double-Network Slide-Ring Topological Hydrogel Fibers: Fabrication and Sensor Application.

Hao Xiao1, Xiangting Lai1, Xueru Xiong1

  • 1School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510641, China.

Small (Weinheim an Der Bergstrasse, Germany)
|March 17, 2025
PubMed
Summary

Researchers developed advanced stretchable conductive hydrogel fibers using sodium alginate and slide-ring networks. These novel fibers offer superior conductivity, mechanical stability, and stretchability for next-generation wearable sensors and flexible electronics.

Keywords:
bile acidconductive fibershydrogel processingslide‐ringstrain sensors

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • Stretchable conductive hydrogel fibers are essential for flexible electronics but face manufacturing and mechanical challenges.
  • Existing materials often lack the required continuous production viability and adaptability for widespread use in wearable devices.

Purpose of the Study:

  • To engineer robust, stretchable conductive hydrogel fibers with improved spinnability and mechanical properties.
  • To enable the development of advanced wearable sensors and textile-based electronic devices.

Main Methods:

  • Combined sodium alginate coordination networks with slide-ring topological networks.
  • Utilized calcium ion crosslinking for tunable mechanical properties and conductivity.
  • Incorporated polymerizable pseudorotaxanes for enhanced tensile strength and dynamic stability.

Main Results:

  • Achieved hydrogel fibers with excellent ion conductivity (0.64 S m⁻¹, 20 °C), transparency, and >3000% stretchability.
  • Demonstrated high dynamic mechanical stability with negligible hysteresis and creep.
  • Fabricated strain sensors accurately captured high-frequency motion and human body movements with minimal drift.

Conclusions:

  • The developed double-network slide-ring topological hydrogel fibers offer a promising platform for advanced wearable electronics.
  • This approach provides a new strategy for designing highly adaptable and durable textile-based stretchable electronic devices.