Molecular-Level Engineering of Adhesion in Carbon Nanomaterial Interfaces

Michael R. Roenbeck, Al'Ona Furmanchuk, Zhi An, Jeffrey T. Paci, Xiaoding Wei, Sonbinh T. Nguyen, George C Schatz, Horacio D. Espinosa

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Weak interfilament van der Waals interactions are potentially a significant roadblock in the development of carbon nanotube- (CNT-) and graphene-based nanocomposites. Chemical functionalization is envisioned as a means of introducing stronger intermolecular interactions at nanoscale interfaces, which in turn could enhance composite strength. This paper reports measurements of the adhesive energy of CNT-graphite interfaces functionalized with various coverages of arylpropionic acid. Peeling experiments conducted in situ in a scanning electron microscope show significantly larger adhesive energies compared to previously obtained measurements for unfunctionalized surfaces (Roenbeck et al. ACS Nano 2014, 8 (1), 124-138). Surprisingly, however, the adhesive energies are significantly higher when both surfaces have intermediate coverages than when one surface is densely functionalized. Atomistic simulations reveal a novel functional group interdiffusion mechanism, which arises for intermediate coverages in the presence of water. This interdiffusion is not observed when one surface is densely functionalized, resulting in energy trends that correlate with those observed in experiments. This unique intermolecular interaction mechanism, revealed through the integrated experimental-computational approach presented here, provides significant insights for use in the development of next-generation nanocomposites.

Original languageEnglish
Pages (from-to)4504-4516
Number of pages13
JournalNano Letters
Volume15
Issue number7
DOIs
Publication statusPublished - Jul 8 2015

Fingerprint

Nanostructured materials
adhesion
Carbon
Adhesion
engineering
adhesives
Adhesives
Carbon Nanotubes
Graphite
carbon
Carbon nanotubes
Nanocomposites
nanocomposites
carbon nanotubes
peeling
Peeling
energy
interactions
Graphene
Functional groups

Keywords

  • adhesive energy
  • atomistic simulations
  • Carbon-based nanomaterials
  • chemical functionalization
  • in situ SEM testing
  • surface energy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanical Engineering

Cite this

Roenbeck, M. R., Furmanchuk, AO., An, Z., Paci, J. T., Wei, X., Nguyen, S. T., ... Espinosa, H. D. (2015). Molecular-Level Engineering of Adhesion in Carbon Nanomaterial Interfaces. Nano Letters, 15(7), 4504-4516. https://doi.org/10.1021/acs.nanolett.5b01011

Molecular-Level Engineering of Adhesion in Carbon Nanomaterial Interfaces. / Roenbeck, Michael R.; Furmanchuk, Al'Ona; An, Zhi; Paci, Jeffrey T.; Wei, Xiaoding; Nguyen, Sonbinh T.; Schatz, George C; Espinosa, Horacio D.

In: Nano Letters, Vol. 15, No. 7, 08.07.2015, p. 4504-4516.

Research output: Contribution to journalArticle

Roenbeck, MR, Furmanchuk, AO, An, Z, Paci, JT, Wei, X, Nguyen, ST, Schatz, GC & Espinosa, HD 2015, 'Molecular-Level Engineering of Adhesion in Carbon Nanomaterial Interfaces', Nano Letters, vol. 15, no. 7, pp. 4504-4516. https://doi.org/10.1021/acs.nanolett.5b01011
Roenbeck MR, Furmanchuk AO, An Z, Paci JT, Wei X, Nguyen ST et al. Molecular-Level Engineering of Adhesion in Carbon Nanomaterial Interfaces. Nano Letters. 2015 Jul 8;15(7):4504-4516. https://doi.org/10.1021/acs.nanolett.5b01011
Roenbeck, Michael R. ; Furmanchuk, Al'Ona ; An, Zhi ; Paci, Jeffrey T. ; Wei, Xiaoding ; Nguyen, Sonbinh T. ; Schatz, George C ; Espinosa, Horacio D. / Molecular-Level Engineering of Adhesion in Carbon Nanomaterial Interfaces. In: Nano Letters. 2015 ; Vol. 15, No. 7. pp. 4504-4516.
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