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A Self-Healing Conductive Elastomer Based on a Polymerizable Deep Eutectic Solvent
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DOI：10.1002/smll.202304828.png)
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Abstract
En 中文
Conductive elastomers are extensively used in electronics; however, they are prone to mechanical damage, have shortened service life, and cause environmental pollution and resource waste under the influence of external factors. Therefore, conductive elastomers with rapid self-healing properties are crucial for solving these problems. To that end, a conductive elastomer based on a polymerizable deep eutectic solvent as the matrix is developed in this study. The contents of certain small molecules and conductive particles are adjusted to yield a conductive elastomer with excellent comprehensive performance. The elastomer exhibited noteworthy fracture strength (15.7 MPa), ultrahigh fracture elongation (2400%), excellent light transmittance (95.6%), and remarkable self-healing characteristics, with complete electrical healing achieved within 0.6 s, approximate to 63% strain, and approximate to 64% stress recovered within 1 min, and healing efficiency close to 99% realized within 24 h. By leveraging these properties, the elastomer is used to construct a sensor that exhibited a gauge factor of approximate to 0.574 in the strain range 0-2400% and excellent stability. Moreover, the CCK-8 toxicity test and fluorescence staining experiment have demonstrated that conductive elastomers have excellent cell compatibility and also have excellent potential in the field of biomedicine. In particular, the sensor is effectively applied in human motion detection, health monitoring. This study provides a method for synthesizing self-healing conductive elastomers with polymerizable deep eutectic solvents, while simulating the internal self-healing mechanism of the material. This conductive elastomers has excellent self-healing performance, sensing performance, and biocompatibility, and has long-term application prospects in human motion monitoring and intelligent medical fields.image
Keywords:
conductive elastomers
deep eutectic solvent
self-healing
sensors