Kim, Young-Jin Park, Junbeom Yang, Cheol-Min Jeong, Hyeon Su Kim, Seung Min Han, Sang Woo Yang, Beomjoo Kim, Young-Kwan 2024-01-19T19:04:32Z 2024-01-19T19:04:32Z 2021-09-05 2019-09 0266-3538 https://pubs.kist.re.kr/handle/201004/119579 An efficient strategy for the enhancement of mechanical properties of carbon nanotube (CNT) fibers is developed using functionalized graphene oxide with a quaternary ammonium (QA) group (QA-FGO). QA-FGO is designed to induce the p-cation interaction, one of the strongest interactions in living systems, with CNT fibers. Based on the strategy, the tensile strength (58 MPa), specific strength (0.49 N/tex), modulus (2.5 GPa) and toughness (1.1 MJ/m(3)) of CNT fibers are enhanced to 409 MPa, 0.65 N/tex, 13.4 GPa, and 10.1 MJ/m(3), respectively. The reinforcement mechanism is systematically demonstrated with experimental and theoretical approaches. English Pergamon Press Ltd. Bio-inspired incorporation of functionalized graphene oxide into carbon nanotube fibers for their efficient mechanical reinforcement Article 10.1016/j.compscitech.2019.107680 1 Composites Science and Technology, v.181 Composites Science and Technology 181 N scie scopus 000479021000013 2-s2.0-85067203512 Materials Science, Composites Materials Science Article ENHANCEMENT REDUCTION ADHESION Carbon nanotube Graphene oxide Surface functionalization Composite Fiber