A porous ionic gel / leather collagen fiber-based sensing material and a preparation method and application thereof

Porous ion gel/skin collagen fiber-based sensing materials were prepared by vacuum impregnation, bio-foaming, ultraviolet light initiation, and freeze-thaw cycle treatment. This solved the problem of decreased air permeability and improved high air permeability, conductivity, and mechanical properties, making them suitable for flexible wearable sensors.

CN122105860APending Publication Date: 2026-05-29SHAANXI UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHAANXI UNIV OF SCI & TECH
Filing Date
2026-02-11
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing ion gel and collagen fiber composite materials suffer from a significant decrease in breathability, limiting their application in flexible sensing scenarios that require long-term skin contact or breathability.

Method used

A porous ion gel/skin collagen fiber-based sensing material was prepared by means of vacuum impregnation, bio-foaming, UV-induced in-situ polymerization and freeze-thaw cycle treatment to construct a porous structure and achieve a stable composite of skin collagen fiber and ion gel.

Benefits of technology

The material's air permeability, electrical conductivity, and mechanical properties have been improved. The air permeability can reach up to 569.65 mL/(cm2·h), the electrical conductivity can reach 3.43 mS·cm-1, and the tensile strength can reach 10.56 MPa, making it suitable for flexible wearable sensors.

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Abstract

The application discloses a kind of porous ion gel / collagen fiber-based sensing materials and its preparation method and application, it is related to flexible sensing technical field.The preparation method includes that polyvinyl alcohol is added to deionized water, heating stirring obtains polyvinyl alcohol solution;Cellulose nanofiber, acrylic monomer, benzene boric acid ionic liquid, porogen, initiator and crosslinking agent are added to polyvinyl alcohol solution, and mixed to obtain prepolymer liquid;With collagen fiber as skeleton, it is filled with prepolymer liquid in its inside by vacuum impregnation and obtained collagen fiber containing prepolymer liquid;Collagen fiber containing prepolymer liquid is sequentially subjected to biological foaming, in-situ polymerization under ultraviolet light initiation and freeze-thaw cycle treatment, and the porous ion gel / collagen fiber-based sensing material is obtained.The sensing material prepared by the method realizes the synergistic improvement of air permeability, conductivity, mechanical property and sensing sensitivity, so that the material has good application prospect in the field of flexible wearable sensing.
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