材料科学
弹性体
丙烯酸酯
导电体
乳状液
电极
皮克林乳液
制作
复合数
纳米技术
化学工程
聚合物
复合材料
纳米颗粒
共聚物
化学
物理化学
替代医学
病理
工程类
医学
作者
Xiaohui Yu,Yong Zheng,Yufei Wang,Haopeng Zhang,Hui Song,Yupeng Liu,Xiaoshan Fan,Tianxi Liu
标识
DOI:10.1021/acs.chemmater.1c03547
摘要
Ionic liquid (IL)-based conductive elastomers have recently emerged as promising stretchable electrodes for applications in flexible electronic devices because of the interesting features of ILs. However, conventional IL-based elastomers suffer from low mechanical properties, instability in the ambient environment, and lack of self-healability. Herein, highly stretchable, stable, and self-healable IL-based conductive elastomers PnBA/SiO2/PVI (Cu2+, [EMIM]+[BF4]−) were designed and facilely fabricated by one-pot Pickering emulsion polymerization. The Pickering emulsion is composed of the continuous phase of n-butyl acrylate, the dispersed phase containing vinylimidazole, copper acetate and IL ([EMIM]+[BF4]−), and the surfactant vinyl-SiO2. The fabricated materials feature an elastic matrix with microionogel particles embedded in it. The system is chemically and physically cross-linked via vinyl-SiO2 and Cu2+-imidazole coordination interaction, respectively. Such a rational design endows the resulting elastomers with a wide range of properties, including good conductivity, high stretchability, excellent mechanical properties, and self-healability. Besides, owing to this unique structure, they display high stability and their weight and electrical aspects remain almost unchanged in open air and a wide temperature range (30, 50, and 100 °C). Utilizing as flexible sensors, the as-prepared elastomers are able to accurately monitor real-time human motions via converting external stimuli into stable and repeatable signal variations during deformations.
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