Mechanical properties enhanced by solid-state coupling reaction for molecular covalent bridges of carbon nanotube fibers
- Mechanical properties enhanced by solid-state coupling reaction for molecular covalent bridges of carbon nanotube fibers
- 구본철; 유남호; Hyun Ju Kim; 추헌고; 박옥경; 정영진; 김환철; 이재관
- Carbon nanotube fiber; Cross-linking; Molecular bridge; Thermochemical; Mechanical strength
- Issue Date
- Materials letters
- VOL 211-246
- Carbon nanotubes (CNTs) exhibit outstanding mechanical and electrical properties. However, CNT fibers (CNTFs) have still problems in realizing these properties because of the weak forces between nanotubes with many defects of individual CNTs. Here, we report a solid-state coupling reaction with an iodophenyl motif to investigate molecular covalent bridging in CNTFs. The stepwise thermochemical processes were chemical functionalization followed by thermal treatment of CNT surface to induce solid-state coupling reaction for molecular bridge of CNTFs. These molecular-bridged CNTFs presented phenomenal boost in mechanical tensile strength (0.93  N/tex) which is 132% higher than pristine CNTFs without a decrease in electrical conductivity (870  S/cm).
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