Meter-Scale Wearable Multifunctional Core-Shell Nanofiber Textiles for Ultra-Broadband Electromagnetic Interference...

Area of Science:

• Materials Science
• Nanotechnology
• Textile Engineering

Background:

• Growing demand for wearable technologies necessitates advanced materials for electromagnetic interference (EMI) shielding and infrared (IR) stealth.
• Existing textiles often lack the required performance for high-frequency applications and stealth capabilities.

Purpose of the Study:

• To develop meter-scale core-shell nanofiber textiles with superior EMI shielding and IR stealth properties.
• To explore the potential of MXene/graphene oxide (MG) and monstera nanocellulose (MC) composites for wearable applications.

Main Methods:

• Fabrication of MG@MC core-shell nanofibers using a multi-stage cryogenic drying-assisted coaxial wet spinning strategy.
• Characterization of the mechanical, electrical, and shielding properties of the resulting textiles.
• Evaluation of IR stealth performance and other functional properties like dyeability and flame retardancy.

Main Results:

• Achieved meter-scale production of tough, strong, and highly conductive core-shell nanofiber textiles.
• Demonstrated ultra-broadband EMI shielding effectiveness up to 84 dB (8.2-26.5 GHz) and 85 dB (0.3-1.5 THz) at 185 µm thickness.
• Exhibited excellent IR stealth, heat resistance, low IR emissivity, dyeability, flame retardancy, Joule heating, and stress-sensing capabilities.

Conclusions:

• The scalable fabrication of MG@MC core-shell nanofiber textiles offers a promising solution for high-performance wearable protective devices.
• These textiles possess exceptional EMI shielding and IR stealth, alongside versatile functionalities, paving the way for next-generation smart textiles.