纺织学报 ›› 2022, Vol. 43 ›› Issue (02): 24-29.doi: 10.13475/j.fzxb.20211102006

• 纤维材料 • 上一篇    下一篇

双稳态电致变色离子凝胶的制备及其在织物上的应用

李加双, 张丽平(), 付少海   

  1. 江南大学 纺织科学与工程学院, 江苏 无锡 214122
  • 收稿日期:2021-11-02 修回日期:2021-11-24 出版日期:2022-02-15 发布日期:2022-03-15
  • 通讯作者: 张丽平
  • 作者简介:李加双(1997—),男,硕士生。主要研究方向为双稳态变色材料与智能可穿戴纺织品。
  • 基金资助:
    中央高校基本科研业务费专项资金资助项目(JUSRP22040A);中央高校基本科研业务费专项资金资助项目(JUSRP52007A)

Preparation of bistable electrochromic ion gels and their applications for fabric display devices

LI Jiashuang, ZHANG Liping(), FU Shaohai   

  1. College of Textile Science and Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
  • Received:2021-11-02 Revised:2021-11-24 Published:2022-02-15 Online:2022-03-15
  • Contact: ZHANG Liping

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摘要：

为研制一种具有高弹性和双稳态特性的电致变色材料用于柔性电子显示器件,采用溶液聚合法制备了一种基于氢键交联网络的聚丙烯酸2-羟乙酯(PHEA)离子凝胶。借助荧烷染料内酯环与聚合物羟基单元之间形成的氢键作用赋予了荧烷染料颜色稳态性。采用拉力试验机测试了PHEA离子凝胶的力学性能;联用电化学工作站和分光光度仪表征了离子凝胶器件的透明度、电致变色性能和双稳态性能。结果表明:PHEA离子凝胶具有出色的拉伸强度(537 kPa)和拉伸回弹性(436%);组装得到的器件具备优异的响应性(16.5 s)、高颜色对比度(> 80%)、稳态时间(45 h)以及可逆变色性(>1 000次循环)。该离子凝胶在可拉伸电子显示器和智能可穿戴纺织品的开发与研制方面都具有良好的应用价值。

关键词: 双稳态, 电致变色, 离子凝胶, 智能纺织品, 柔性材料

Abstract:

In order to develop a highly elastic and bistable electrochromic material for flexible electronic display devices, poly(2-hydroxyethyl acrylate)(PHEA) ionic gel based on hydrogen bond cross-linking network structure was prepared by solution polymerization. The hydrogen bond between the fluorane dye lactone ring and the polymer hydroxyl unit gave the fluorane dye color steadiness. The mechanical properties of PHEA ionic gel were tested by tensile testing machine. The transparency, electrochromic performance and bistable performance of the ionic gel device were characterized by potentiostat and spectrophotometer. The results show that PHEA ionic gel has tensile strength of 537 kPa and tensile resilience of 436%. The resulting electrochromic device is found to have responsiveness of 16.5 s, high coloration contrast of > 80%, bistability of 45 h, and reversibility of > 1 000 cycles, all of which are regarded as excellent. The ionic gel offers good application value in the development of stretchable electrochromic display and intelligent wearable electronic textiles.

Key words: bistability, electrochromic, ionic gel, smart textile, flexible material

中图分类号: 

  • TS101.8

图1

双稳态电致变色凝胶制备过程示意图"

图2

双稳态电致变色凝胶的实物图"

图3

双稳态电致变色凝胶的拉伸弯曲图"

图4

双稳态电致变色凝胶的应力-应变曲线"

图5

双稳态电致变色凝胶在497 nm处的透过率"

表1

不同PC含量凝胶的电致变色性能和稳态性能"

PC质量分数/% 着色时间/s 褪色时间/s 稳态时间/h
20 53.2 148.3 110
25 36.5 105.3 70
30 14.5 32.6 36
35 6.2 16.7 17
40 2.7 5.4 5

表2

不同MBA用量凝胶的电致变色性能和稳态性能"

MBA质量分数/% 着色时间/s 褪色时间/s 稳态时间/h
0 14.5 32.6 36
0.05 15.3 34.3 40
0.10 15.1 37.8 41
0.15 16.5 38.3 45
0.20 20.3 45.7 32
0.25 26.1 62.4 24

图6

器件的循环使用性"

图7

荧烷染料的电致变色机制"

表3

不同聚合物凝胶器件的稳态时间"

凝胶材料 稳态时间
聚甲基丙烯酸甲酯 0.8
聚丙烯酸甲酯 0.2
聚丙烯酸丁酯 0.5
聚丙烯酸2-羟丙酯 30
聚丙烯酸2-羟乙酯 45

图8

双稳态PET电致变色凝胶器件的变色实物图"

图9

双稳态PET电致变色手环用于纺织装饰品"

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