双稳态
材料科学
电致变色
粒径
聚合物
化学工程
响应时间
壳体(结构)
蒸发
芯(光纤)
复合材料
纳米技术
光电子学
高分子化学
化学
物理化学
计算机图形学(图像)
工程类
物理
热力学
计算机科学
电极
作者
Chengcheng Wang,Jiashuang Li,Liping Zhang,Shaohai Fu
标识
DOI:10.1016/j.dyepig.2021.109936
摘要
In the improvement of stability and lifetime of bistable electrochromic (EC) materials, the microcapsule technique was used to protect the EC materials in a polymer shell, which was named bistable EC microcapsules (BEC-Ms). However, the particle size and shell thickness of microcapsules will affect their properties, such as response time, coloration efficiency, and bistable property. In this study, BEC-Ms was prepared via solvent evaporation method filled with PMMA as the shell and the mixture of crystal violet lactone (CVL), tetrabutylammonium perchlorate (TBAP), and phase change material (PCM) as the core. The particle size and shell thickness of microcapsules were adjusted and systematically investigated by controlling the emulsification rate and mass ratio of polymer shell to core. The optimized BEC-Ms with 2 μm size and 22.94 nm thickness showed excellent performance including fast response time (about 1 s), far lower than the safety of human body drive voltage (2 V), coloration efficiency (932 cm2 C−1), and good bistability (216 h). This approach provides a viable and alternative to flexible energy-efficient wearable display-related devices and smart textiles.
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