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Carbon nanotube surface chemistry and its effects on interfacial nanomechanics

  • Asa H. Barber (a1), Sidney R. Cohen (a2) and H. Daniel (a1)

Abstract

Individual multi-walled carbon nanotube pullout experiments were used to measure the adhesion strength at a nanotube-epoxy polymer interface. The interfacial strength was found, as expected, to increase when the nanotubes were chemically treated to induce strong bonding with the polymer matrix. At long nanotube embedment lengths within the polymer, the nanotubes were seen to fracture in preference to failure at their interface with the polymer. Interfacial mechanics models are applied to the data to describe interfacial adhesion at the nano-level.

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