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Continuously Processed, Long Electrochromic Fibers with Multi-Environmental Stability.

Hongwei Fan1, Kerui Li1,2, Xuelong Liu1

  • 1State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China.

ACS Applied Materials & Interfaces
|June 2, 2020
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Summary
This summary is machine-generated.

Researchers developed continuously processed smart electrochromic (EC) fibers for industrial weaving. These stable, color-changing fibers enable large-area smart textiles for applications like adaptive camouflage and wearable displays.

Keywords:
continuous preparationelectrochromic fibersmulti-environmental stabilityparallel dual counter electrodeswearable display

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Area of Science:

  • Materials Science
  • Textile Engineering
  • Electrochemistry

Background:

  • Smart textiles with tunable color change are of interest but limited by the lack of continuously processed, industrially viable fibers.
  • Existing color-changing fibers often lack long-range controllability and environmental stability, hindering practical applications.

Purpose of the Study:

  • To develop continuously processed, long electrochromic (EC) fibers with enhanced stability and controllability for industrial textile applications.
  • To demonstrate the potential of these EC fibers in creating smart textiles for adaptive camouflage and wearable displays.

Main Methods:

  • Continuous preparation of EC fibers using custom-built equipment with viologens as EC-active materials.
  • Implementation of a parallel dual-counter-electrode structure for uniform and rapid color changes.
  • Incorporation of electrochemical anticorrosive and outer polymer protective layers to improve fiber stability.

Main Results:

  • Achieved uniform and rapid color changes (blue, magenta, green, dull red) over long fiber lengths.
  • Demonstrated enhanced electrochemical, mechanical, washing, irradiation, and thermal stability of the EC fibers.
  • Successfully knitted EC fibers into large-area smart textiles and integrated them into complex patterns.

Conclusions:

  • The developed EC fibers overcome limitations in continuous processing and industrial applicability for smart textiles.
  • These fibers offer multi-environmental stability and tunable color-changing capabilities for advanced applications.
  • The successful demonstration in adaptive camouflage and wearable displays highlights the practical potential of this technology.