Mechanical properties enhanced by solid-state coupling reaction for molecular covalent bridges of carbon nanotube fibers

Title
Mechanical properties enhanced by solid-state coupling reaction for molecular covalent bridges of carbon nanotube fibers
Authors
구본철유남호Hyun Ju Kim추헌고박옥경정영진김환철이재관
Keywords
Carbon nanotube fiber; Cross-linking; Molecular bridge; Thermochemical; Mechanical strength
Issue Date
2018-01
Publisher
Materials letters
Citation
VOL 211-246
Abstract
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).
URI
http://pubs.kist.re.kr/handle/201004/66286
ISSN
0167-577X
Appears in Collections:
KIST Publication > Article
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