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An electrochromic alginate fiber based on a W18O49/PEDOT:PSS composite layer
Yongjiao Liu1, Ning Sun2, Jingzhong Duan1
1College of Chemistry and Chemical Engineering, State Key Laboratory of Bio-fibers and Eco-textiles, College of materials science and engineering, Shandong Collaborative Innovation Center of Marine Bio-based Fibers and Ecological Textiles, Qingdao University, Qingdao 266071, PR China.
International Journal of Biological Macromolecules
|January 10, 2025
Summary
Researchers developed continuous fabrication of electrochromic alginate fibers using silver nanoparticle-calcium alginate. These conductive fibers exhibit rapid, reversible color changes, paving the way for new applications.
Area of Science:
- Materials Science
- Polymer Chemistry
- Nanotechnology
Background:
- Limited research exists on electrochromic alginate fibers, hindering their application potential.
- Alginate fibers offer a versatile platform for developing advanced functional materials.
Purpose of the Study:
- To develop a continuous fabrication technique for electrochromic alginate fibers.
- To enhance the electrical conductivity and electrochromic properties of alginate fibers.
Main Methods:
- Fabrication of silver nanoparticle-calcium alginate fibers via Ag+ substitution.
- Sequential coating with PEDOT:PSS, W18O49, and PVDF:HFP for electrochromic and electrolyte layers.
- Testing of fiber conductivity, response time, and reversibility under varying conditions.
Main Results:
- Achieved continuous fabrication of electrochromic alginate fibers with high electrical conductivity (78% between 3-8 Ω).
- Demonstrated rapid color change (5 s) within a voltage range of 0.1 V to -0.7 V.
- Confirmed reversible color change to original state within 10 minutes and uniform color change in bent states.
Conclusions:
- The developed technique enables the creation of highly conductive and responsive electrochromic alginate fibers.
- These fibers exhibit excellent reversibility and stability, suitable for diverse applications.
- This research provides a foundation for the industrial production and intelligent utilization of electrochromic alginate fibers.
