Self-healing conductive ionic gel as well as preparation method and application thereof

Abstract

The invention discloses self-healing conductive ionic gel as well as a preparation method and application thereof. The method comprises the following steps of: uniformly mixing polyethylene glycol, acrylic acid, an initiator, electrolyte salt and water, then carrying out photo-initiated or thermal-initiated polymerization reaction under an oxygen-free or inert condition, and finally balancing under a constant-temperature and constant-humidity condition to obtain the self-healing conductive ionic gel. The PAA-PEO-Li ionic gel prepared by a one-step method has the advantages that the mechanicalstrength far higher than that of common ionic gel is obtained through the hydrogen bond effect and the chain entanglement effect between PAA-PEO molecular chains, good stretchability and rebound resilience can be achieved under the condition that high mechanical strength is kept, and a flexible sensor which is high in sensitivity and good in stability and repeatability can be prepared and used formonitoring human motion or simulating biological skin to feel external stimulation. The self-healing conductive ionic gel has excellent optical transparency and can be used as a potential material for preparing optical devices.

Description

technical field [0001] The invention belongs to the technical field of conductive hydrogel materials, and in particular relates to a self-healing conductive ion gel and its preparation method and application. Background technique [0002] Conductive hydrogels are a class of highly functional conductive materials whose three-dimensional network and porous structure can accommodate a large amount of water and provide rapid transport channels for charge carriers. Compared with traditional electronic materials mainly based on rigid substrates, conductive hydrogels have good biocompatibility, hydrophilicity, swelling property and flexibility. And the synergistic mechanism of its mechanical network and conductive network makes it still have excellent electrical conductivity under deformation conditions such as mechanical stretching, bending, and folding. Based on the above multiple advantages, conductive hydrogels have shown excellent application potential in the fields of artifi...

AI Technical Summary

Problems solved by technology

[0005] In summary, the existing ion gels have more or less disadvantages such as low mechanical strength, weak tensile properties, weak resilience, poor transparency, inability to self-repair, complex preparation process, and high cost.

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