Conductive nanofiber double network adhesive hydrogel, preparation method thereof and sensing application

CN116462860BActive Publication Date: 2026-05-29SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Filing Date
2023-03-30
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing wearable sensors suffer from uneven dispersion of conductive fillers in hydrogel networks, making it difficult to reconcile dynamic mechanical properties and conductivity. Furthermore, their poor adhesion in humid and dynamic environments limits their application scope.

Method used

Conductive hydrogels were constructed using conductive silver nanoparticles modified with β-lactoglobulin fibers (BLG-Ag), polyvinyl alcohol (PVA), and acrylic acid (AA). Through hydrogen bonding, electrostatic interactions, and multiple physical/chemical crosslinking, a conductive nanofiber dual-network adhesive hydrogel was formed, achieving good dynamic mechanical properties and strong tissue adhesion.

Benefits of technology

The prepared hydrogel has superior mechanical properties, high conductivity and excellent biocompatibility, and can exhibit high sensitivity within the strain range, making it suitable for flexible sensors to monitor human movement and micro-movements.

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Abstract

The application discloses a conductive nanofiber double-network adhesive hydrogel, a preparation method thereof and sensing application. The conductive nanofiber double-network adhesive hydrogel is prepared by taking polyvinyl alcohol and BLG-Ag as a first network formed through freeze-thaw cycles and taking acrylic acid as a second network formed through free radical polymerization. Through the introduction of a double-network crosslinking, conductive nanofiber compounding and interface non-covalent interaction strategy, the hydrogel has excellent mechanical properties, adhesive properties, conductivity and biocompatibility, and the properties can be adjusted by controlling the addition amount of BLG-Ag. Due to the good adhesive properties and conductivity of the hydrogel to tissues, the material can be used for wearable sensors to monitor human tissue movements. Sensing experiments prove that the hydrogel can monitor large body movements, subtle movements and physiological indexes in real time. Due to simple preparation, excellent performance and good biocompatibility, the hydrogel is expected to be applied to health monitoring and disease treatment.
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