3D chemically cross-linked single-walled carbon nanotube buckypapers

  1. Get@NRC: 3D chemically cross-linked single-walled carbon nanotube buckypapers (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1039/c4ra12026d
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
Journal titleRSC Advances
Pages5756457573; # of pages: 10
SubjectBucky paper
AbstractSingle-walled carbon nanotubes (SWCNTs) covalently modified with OH functional groups were assembled into buckypapers through solvent dispersion and vacuum filtration. These SWCNT-OH buckypaper sheets were subsequently crosslinked by wetting with bifunctional linkers followed by hot compression causing reaction between the functional groups of the reagent and OH functional groups on the side-walls of SWCNTs to create three-dimensional (3D) covalently cross-linked buckypapers. Cross-linking also was performed using SWCNTs encapsulated with a functionalized polymer wrapping in a core-shell structure, where OH or/and NH2 groups are available on the surface of the polymeric shell for reaction. The 3D cross-linked SWCNT buckypapers retain the porous character typical of buckypaper, and were characterized for their tensile properties and thermal and electrical conductivities. Several cross-linking approaches dramatically improved the mechanical properties. The strongest and stiffest papers (32 MPa, E = 3.1 GPa), which approach 10× stronger and stiffer than the pristine non-crosslinked buckypaper, were obtained at the expense of a loss of electrical conductivity. In other cases, such as cross-linking using a high-performance epoxy resin monomer, improvements in strength and stiffness of ∼5× were obtained while retaining electrical and thermal conductivity. Therefore, the optimal cross-linking approach would be determined by the desired, multifunctional properties. Additionally, the approach can be used in the preparation buckypaper composites and it is demonstrated that cross-linking using a multifunctional epoxy resin prior to impregnation with the same epoxy resin results in substantially better mechanical properties in comparison to just epoxy-impregnation of pristine buckypaper.
Publication date
PublisherRoyal Society of Chemistry
AffiliationNational Research Council Canada; Security and Disruptive Technologies; Aerospace
Peer reviewedYes
NPARC number21272882
Export citationExport as RIS
Report a correctionReport a correction
Record identifier8f9b7f93-fc75-4249-ba5e-25584f6561e0
Record created2014-12-03
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)