A Self‐Healing Conductive Elastomer Based on a Polymerizable Deep Eutectic Solvent

弹性体 材料科学 复合材料 导电体 纳米复合材料 共晶体系 标度系数 微观结构 医学 替代医学 病理 制作
作者
Xiaoming Wang,Ling Weng,Xiaorui Zhang,Zijian Wu,Lizhu Guan,Li Xue
出处
期刊:Small [Wiley]
卷期号:20 (11) 被引量:18
标识
DOI:10.1002/smll.202304828
摘要

Abstract 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, ≈63% strain, and ≈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 ≈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.
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