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Strain-Sensitive Double-Network Organogel With Strong Adhesion for Movement Monitoring.
Shijun Long1,2,3, Han Ren1, Qingbiao Cao1
1Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan, P. R. China.
Macromolecular Rapid Communications
|July 14, 2026
Summary
Researchers developed a new conductive organogel for flexible electronics. This highly adhesive and stretchable material offers improved transparency and mechanical properties, enabling sensitive strain sensing for wearable applications.
Area of Science:
- Materials Science
- Polymer Chemistry
- Soft Matter Physics
Background:
- Conductive organogels are promising for flexible electronics but face challenges like poor transparency, mechanical weakness, low sensitivity, and weak adhesion.
- Existing materials often compromise performance in one area to improve another, limiting their practical applications.
Purpose of the Study:
- To create a highly adhesive, stretchable, and transparent conductive organogel with enhanced mechanical properties and sensitivity for flexible electronics.
- To investigate the structure-property relationships of a novel double-network organogel incorporating self-assembled nanofibers and ionic conductivity.
Main Methods:
- Fabrication of a double-network organogel via interpenetration of 1,3:2,4-dibenzylidene sorbitol (DBS) nanofibers and polyacrylamide (PAM) chains in glycerol.
- Incorporation of lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) to enhance ionic conductivity and interpenetrating network interactions.
- Characterization of the organogel's adhesion, transparency, mechanical properties, and performance as a strain sensor.
Main Results:
- The developed DBS/PAM-Li organogel demonstrated high and durable adhesion to various substrates.
- Achieved excellent optical transparency (92% transmittance at 1.45 mm thickness) and good mechanical stretchability.
- As a strain sensor, it exhibited a high gauge factor (8.72), fast response time (133 ms), and low detection limit (0.25% strain) for both small and large deformations.
Conclusions:
- The novel double-network conductive organogel overcomes limitations of traditional materials, offering a promising platform for advanced flexible electronics.
- The material's superior adhesion, transparency, stretchability, and sensitive strain-sensing capabilities make it suitable for wearable electronics and human motion monitoring.
