提拉纺丝制备弹性离子液体凝胶纤维

时英坤; 王栋; 武培怡; 孙胜童

doi:10.11777/j.issn1000-3304.2023.23266

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提拉纺丝制备弹性离子液体凝胶纤维

研究论文 | 更新时间：2024-09-20

- 提拉纺丝制备弹性离子液体凝胶纤维
- Pultrusion Spinning of Elastic Ionogel Fibers
- 高分子学报 2024年55卷第5期页码：573-581
- 作者机构：
  
  1.纤维材料改性国家重点实验室东华大学化学与化工学院先进低维材料中心上海 201620
  2.武汉纺织大学材料科学与工程学院武汉 430200
- 作者简介：
  
  E-mail: wangd@wtu.edu.cn
  shengtongsun@dhu.edu.cn
- 基金信息：
  
  国家自然科学基金(基金号 ┣52322306;52161135102);22275032┫
- DOI：10.11777/j.issn1000-3304.2023.23266
  中图分类号：
- 纸质出版日期：2024-05-20，
  
  网络出版日期：2024-02-01，
  
  收稿日期：2023-11-16，
  
  录用日期：2023-12-19
- 稿件说明：
移动端阅览
时英坤, 王栋, 武培怡, 孙胜童. 提拉纺丝制备弹性离子液体凝胶纤维. 高分子学报, 2024, 55(5), 573-581

Shi, Y. K.; Wang, D.; Wu, P. Y.; Sun, S. T. Pultrusion spinning of elastic ionogel fibers. Acta Polymerica Sinica, 2024, 55(5), 573-581
时英坤, 王栋, 武培怡, 孙胜童. 提拉纺丝制备弹性离子液体凝胶纤维. 高分子学报, 2024, 55(5), 573-581 DOI： 10.11777/j.issn1000-3304.2023.23266.

Shi, Y. K.; Wang, D.; Wu, P. Y.; Sun, S. T. Pultrusion spinning of elastic ionogel fibers. Acta Polymerica Sinica, 2024, 55(5), 573-581 DOI： 10.11777/j.issn1000-3304.2023.23266.

摘要

规模化制备兼具高弹性和高离子电导率的可拉伸导电纤维极具挑战性. 为此，我们开发了一步法提拉纺丝策略，可连续制备高弹性离子液体凝胶纤维. 其中，离子液体与聚合物基质以非共价相互作用结合，在纤维中稳定存在，并可大幅调控纤维力学性能. 得益于通过氢键自发纳米限域形成的多尺度相分离结构，所得离子液体凝胶纤维具有良好的拉伸性(707%)、高透明度(98%)、高回弹性(残余应变仅9%)、导电性(0.12 S·m

-1

)以及抗冻性能. 此外，该纤维还可对湿气、温度以及应变表现出极为灵敏的信号感知能力. 这一工作为开发面向智能感知的高性能离子导电纤维材料提供了设计思路.

Abstract

Stretchable ionically conductive fibers hold great promise in the fields of flexible electronic devices

smart textiles

and human-machine interfaces. However

the scalable production of stretchable fibers with both high conductivity and elasticity remains a significant challenge. In recent years

pultrusion spinning has emerged as a promising technique for the continuous fabrication of ultrathin gel fibers at ambient conditions. Nevertheless

the reduction in fiber diameter often comes at the cost of significantly increased resistance

hampering their applications in smart sensing. To overcome this limitation

in this study

we introduce a one-step pultrusion spinning approach for the continuous production of highly elastic ionogel fibers. Our ionogel fiber is derived from a spinning dope containing poly(2-(dimethylamino)ethylacrylate) methyl chloride quarternary salt (PDMAEA-Q)

poly(methacrylic acid) (PMAA)

and an ionic liquid

1-ethyl-3-methylimidazolium ethyl sulfate (EMI ES). Upon water evaporation

PMAA chains undergo nanoconfinement through hydrogen bonding

forming numerous clusters dispersed within the ductile PDMAEA-Q matrix. Moreover

the employed ionic liquid

EMI ES

interacts with polymer matrix through various physical interactions

further modulating the mechanical and electric properties of the resulting fiber. Owing to its hierarchical phase-separated structure formed by spontaneous nanoconfinement

the ionogel fiber exhibits exceptional stretchability (707% elongation)

remarkable transparency (98%)

high elasticity (~9% residual strain)

high ionic conductivity (0.12 S·m

-1

)

and anti-freezing properties. Furthermore

the ionogel fiber is sensitive to humidity

temperature

and strain changes

enabling its high-resolution detection of different stimuli

via

electrical signals. This work paves the way for the design of advanced ionically conductive fibers

unlocking a myriad of possibilities in smar

t sensing applications.

关键词

纺丝导电纤维离子液体凝胶智能感知

Keywords

SpinningConductive fiberIonogelSmart sensing

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