Mechanical Strength Improvements of Carbon Nanotube Threads through Epoxy Cross-Linking
AbstractIndividual Carbon Nanotubes (CNTs) have a great mechanical strength that needs to be transferred into macroscopic fiber assemblies. One approach to improve the mechanical strength of the CNT assemblies is by creating covalent bonding among their individual CNT building blocks. Chemical cross-linking of multiwall CNTs (MWCNTs) within the fiber has significantly improved the strength of MWCNT thread. Results reported in this work show that the cross-linked thread had a tensile strength six times greater than the strength of its control counterpart, a pristine MWCNT thread (1192 MPa and 194 MPa, respectively). Additionally, electrical conductivity changes were observed, revealing 2123.40 S·cm−1 for cross-linked thread, and 3984.26 S·cm−1 for pristine CNT thread. Characterization suggests that the obtained high tensile strength is due to the cross-linking reaction of amine groups from ethylenediamine plasma-functionalized CNT with the epoxy groups of the cross-linking agent, 4,4-methylenebis(N,N-diglycidylaniline). View Full-Text
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Yu, Q.; Alvarez, N.T.; Miller, P.; Malik, R.; Haase, M.R.; Schulz, M.; Shanov, V.; Zhu, X. Mechanical Strength Improvements of Carbon Nanotube Threads through Epoxy Cross-Linking. Materials 2016, 9, 68.
Yu Q, Alvarez NT, Miller P, Malik R, Haase MR, Schulz M, Shanov V, Zhu X. Mechanical Strength Improvements of Carbon Nanotube Threads through Epoxy Cross-Linking. Materials. 2016; 9(2):68.Chicago/Turabian Style
Yu, Qingyue; Alvarez, Noe T.; Miller, Peter; Malik, Rachit; Haase, Mark R.; Schulz, Mark; Shanov, Vesselin; Zhu, Xinbao. 2016. "Mechanical Strength Improvements of Carbon Nanotube Threads through Epoxy Cross-Linking." Materials 9, no. 2: 68.
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