Bio-Inspired Incorporation of Functionalized Graphene Oxide into Carbon Nanotube Fibers for Their Efficient Mechanical Reinforcement
- Bio-Inspired Incorporation of Functionalized Graphene Oxide into Carbon Nanotube Fibers for Their Efficient Mechanical Reinforcement
- 양철민; 김승민; 정현수; 김영관; 박준범; 김영진; 한상우; 양범주
- CNT 섬유
- Issue Date
- Composites science and technology
- VOL 181-107680-7
- 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 π-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/m3) of CNT fibers are enhanced to 409  MPa, 0.65  N/tex, 13.4  GPa, and 10.1  MJ/m3, respectively. The reinforcement mechanism is systematically demonstrated with experimental and theoretical approaches.
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