Multifunctional and Washable Carbon Nanotube-Wrapped Textile Yarns for Wearable E-Textiles

Area of Science:

• Materials Science
• Textile Engineering
• Wearable Technology

Background:

• Carbon nanotube (CNT) yarns offer excellent properties for wearable electronics.
• Existing CNT yarns face limitations in textile integration and durability.

Purpose of the Study:

• To develop a novel hybrid carbon nanotube (CNT)-wrapped textile yarn for advanced wearable applications.
• To demonstrate the yarn's suitability for 3D knitting and integration into smart garments.

Main Methods:

• Customized a spinning system to produce CNT-wrapped textile yarns.
• Investigated the influence of core yarn and spinning parameters on yarn properties.
• Utilized three-dimensional (3D) knitting to integrate the yarn into a wristband and glove finger.
• Evaluated the electrical, mechanical, and thermal properties of the knitted structures.

Main Results:

• Achieved highly tailored hybrid CNT yarns suitable for knitting and weaving.
• Demonstrated seamless integration of CNT yarns into 3D knitted structures for the first time.
• The knitted fabric showed significant resistance changes with strain, enabling precise motion sensing.
• The yarn exhibited rapid heating capabilities and maintained performance after 30 washing cycles.

Conclusions:

• The novel hybrid CNT yarn is a versatile material for advanced wearable electronic applications.
• The developed 3D knitted structures offer a robust platform for multimodal sensing and thermal management.
• The yarn's durability and adaptability pave the way for next-generation smart textiles.