Bio-inspired incorporation of functionalized graphene oxide into carbon nanotube fibers for their efficient mechanical reinforcement

  • Young Jin Kim
  • , Junbeom Park
  • , Cheol Min Yang
  • , Hyeon Su Jeong
  • , Seung Min Kim
  • , Sang Woo Han
  • , Beomjoo Yang
  • , Young Kwan Kim

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

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.

Original languageEnglish
Article number107680
JournalComposites Science and Technology
Volume181
DOIs
StatePublished - 8 Sep 2019

Keywords

  • Carbon nanotube
  • Composite
  • Fiber
  • Graphene oxide
  • Surface functionalization

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