TY - JOUR
T1 - Interface toughness of carbon nanotube reinforced epoxy composites
AU - Ganesan, Yogeeswaran
AU - Peng, Cheng
AU - Lu, Yang
AU - Loya, Phillip E.
AU - Moloney, Padraig
AU - Barrera, Enrique
AU - Yakobson, Boris I.
AU - Tour, James M.
AU - Ballarini, Roberto
AU - Lou, Jun
PY - 2011/2/23
Y1 - 2011/2/23
N2 - Traditional single-fiber pull-out type experiments were conducted on individual multiwalled carbon nanotubes (MWNT) embedded in an epoxy matrix using a novel technique. Remarkably, the results are qualitatively consistent with the predictions of continuum fracture mechanics models. Unstable interface crack propagation occurred at shortMWNTembedments,which essentially exhibited a linear load-displacement response prior to peak load. Deep embedments, however, enabled stable crack extension and produced a nonlinear load-displacement response prior to peak load. The maximum pull-out forces corresponding to a wide range of embedments were used to compute the nominal interfacial shear strength and the interfacial fracture energy of the pristine MWNT-epoxy interface. © 2010 American Chemical Society.
AB - Traditional single-fiber pull-out type experiments were conducted on individual multiwalled carbon nanotubes (MWNT) embedded in an epoxy matrix using a novel technique. Remarkably, the results are qualitatively consistent with the predictions of continuum fracture mechanics models. Unstable interface crack propagation occurred at shortMWNTembedments,which essentially exhibited a linear load-displacement response prior to peak load. Deep embedments, however, enabled stable crack extension and produced a nonlinear load-displacement response prior to peak load. The maximum pull-out forces corresponding to a wide range of embedments were used to compute the nominal interfacial shear strength and the interfacial fracture energy of the pristine MWNT-epoxy interface. © 2010 American Chemical Society.
KW - Epoxy composite
KW - Interfacial strength
KW - Multiwall carbon nanotubes
KW - Single-fiber pull-out
UR - http://www.scopus.com/inward/record.url?scp=84879792831&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84879792831&origin=recordpage
U2 - 10.1021/am1011047
DO - 10.1021/am1011047
M3 - RGC 21 - Publication in refereed journal
SN - 1944-8244
VL - 3
SP - 129
EP - 134
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 2
ER -