Development of flexible electrothermal fabrics based on silver-nanowire-modified polyacrylonitrile nanofiber yarns for wearable heating applications

Textile Research Journal, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 8, 2025

This paper describes the development of advanced electrothermal fabric constructed from electrospun polyacrylonitrile (PAN) nanofiber yarns, modified with silver nanowires (AgNWs) and polyethylenimine (PEI). The an average diameter 53.7 µm, were woven into fabrics using conventional textile fabrication techniques. incorporation PEI significantly improved hydrophilicity fabric, thereby enhancing adhesion AgNWs boosting electrical conductivity fabric. Electrothermal characterization revealed that demonstrated a rapid heating response, reaching steady-state temperature approximately 37.5°C within 35 s under applied voltage 1.2 V. A strong linear correlation ( R 2 = 0.999) was observed between power, indicating potential for precise thermal management at low operating voltages. AgNW–PEI–PAN yarn shows great promise as flexible, efficient material applications in wearable technologies smart textiles.

Language: Английский

Innovations Progress in Emerging Multifunctional Aramid Nanofiber Aerogels

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(9), P. 13302 - 13323

Published: Feb. 19, 2025

Aerogels have attracted great attention in the academic and industrial fields due to their intrinsic low density, high porosity, specific surface area. As an ideal nanobuilding block for advanced aerogels, research community has shown a strong interest aramid nanofiber (ANF) aerogel materials applications frontier fields. However, there is lack of comprehensive review basic development practical pure ANF aerogels regarding these latest achievements past decade. This aims fill this gap by comprehensively exploring preparation, properties, application progress, challenges, prospects aerogels. We begin with summary rheological principles dispersions, different preparation strategies, drying methods Then, unique properties various morphologies outstanding advantages based on are critically reviewed. Besides, progress multifunctional flexible thermal insulation, environmental protection, energy storage, other summarized. Finally, we explore main challenges give insights further promotion from lab-scale industry-scale.

Language: Английский

Durable Metallized Liquid Crystal Polymer Fibers Enable Flexible and Tough Electrical Heaters

Polymers, Journal Year: 2025, Volume and Issue: 17(8), P. 1087 - 1087

Published: April 17, 2025

Fiber-shaped electrical heaters with high flexibility and excellent adaptability make an ideal candidate for the application of wearable electronics but still suffer from low strength poor durability. Herein, all-in-one Joule-heating fiber capable outstanding mechanical properties, good heating efficiency, long-term stability is reported by using polymer-assisted metal deposition to firmly coat Cu nanoparticles on high-performance liquid crystal polymer (LCP) fibers. Taking advantage LCP, resultant fibers exhibit a satisfying temperature threshold (up 200 °C) immense (2.94 GPa). By virtue dense continuous film, these show resistance (5.51 Ω/cm) ultrafast response rate (12.6 °C·s−1) at supplied voltages (0.5–3.5 V). Benefiting levodopa/polyethyleneimine interface design, such maintain nearly constant after repeatable bending, folding, even washing (50 cycles). Based above-mentioned merits, patch function knitted as-made offer therapeutic benefits human body joints. This work demonstrates prospective potential enriching challenging applications fiber-shaped systems.

Language: Английский