Boost Up the Mechanical and Electrical Property of CNT Fibers by Governing Lyotropic Liquid Crystalline Mesophases with Aramid Polymers for Robust Lightweight Wiring Applications

• DOI: 10.1007/s42765-022-00246-4
• Publication Date: 2022-12-13T09:03:05Z
• Authors: Ki-Hyun Ryu; Jeong-Gil Kim; Dongju Lee; Seo Gyun Kim; Bon-Cheol Ku; Jun Yeon Hwang; Kwang-Un Jeong; Nam Dong Kim; Dae-Yoon Kim
• Keywords: Aramid; Lyotropic

Abstract Monofilament type of polyaromatic amide (PA) and carbon nanotube (CNT) composite fibers is presented. A concept a lyotropic liquid crystal (LLC) constructed via spontaneous self-assembly introduced to mitigate the extremely low compatibility between PA CNT. These approaches provide an effective co-processing route CNT simultaneously fabricate uniform, continuous, reliable through wet-spinning. Interestingly, addition small amount into dope solution governs LLC mesophase not only in spinneret stage but also coagulant region. Thus, developed PA/CNT have high uniaxial orientational order close interfacial packing compared pure fibers. The achieve outstanding tensile strength, electrical conductivity, electrochemical response, while maintaining lightweight. They exhibit chemical, mechanical, thermal robustness. All these advantages can make flexible, sewable, washable ideal nanocomposite materials for use next-generation information energy transporting system by replacing conventional metal conductors. Graphical governed doping aramid polymers shows ability construct mechanically strong continuous nanotube-based that be used lightweight robust wiring extreme environmental applications.