Park, Jae Seo Park, Ji Yong Kim, Jeong Seob Kang, Yosub Kim, Sang Min Song, Ki Su Kim, Hyun Woo Park, Young Joon Kim, Gwansik Song, Kyonghwa Lee, Seokmin Yun, Deokwoo Cho, Young Shik Yang, Seung Jae 2024-04-11T02:00:13Z 2024-04-11T02:00:13Z 2024-04-11 2024-04 1359-8368 https://pubs.kist.re.kr/handle/201004/149613 Intensive efforts are underway to integrate the distinct properties of individual carbon nanotubes (CNTs) into their assemblies and meet the growing demand for lightweight and strong materials. This study achieved CNT fibers (CNTFs) with high specific tensile strength (4.97 N/tex) and specific modulus (206.8 N/tex) by designing all-ring type bridges between CNTs. This reinforcement strategy involves suppressing the distortion of CNTs and promoting effective crosslinks within the fiber structure to increase the total inter-bundle interactions. The molecular-level network within the linking segment reduces vulnerability at the typically weak connection points and enhances load-transfer efficiency between crosslinked CNTs. In addition to improvements in mechanical properties, incorporating dopant groups in the bridge enhanced the electrical conductivity, reaching up to 2086 S m2/kg. This strategy provides straightforward access to multifunctional fibers beyond those of commercially accessible or literature-reported benchmark fibers. English Pergamon Press Ltd. Molecular-level network engineering of crosslinker towards high-performance carbon nanotube fiber Article 10.1016/j.compositesb.2024.111338 1 Composites Part B: Engineering, v.275 Composites Part B: Engineering 275 N scie scopus 001193869200001 2-s2.0-85185889765 Engineering, Multidisciplinary Materials Science, Composites Engineering Materials Science Article STRENGTH FUNCTIONALIZATION MECHANISM SPECTROSCOPY FAILURE FIELD YARN Mechanical properties Electrical properties Fibre Nano-structures