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Title: Fracture toughness of the sidewall fluorinated carbon nanotube-epoxy interface

The effects of carbon nanotube (CNT) sidewall fluorination on the interface toughness of the CNT epoxy interface have been comprehensively investigated. Nanoscale quantitative single-CNT pull-out experiments have been conducted on individual fluorinated CNTs embedded in an epoxy matrix, in situ, within a scanning electron microscope (SEM) using an InSEM{sup ®} nanoindenter assisted micro-device. Equations that were derived using a continuum fracture mechanics model have been applied to compute the interfacial fracture energy values for the system. The interfacial fracture energy values have also been independently computed by modeling the fluorinated graphene-epoxy interface using molecular dynamics simulations and adhesion mechanisms have been proposed.
Authors:
; ; ; ;  [1] ; ;  [2] ;  [3]
  1. Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005 (United States)
  2. Department of Civil and Environmental Engineering and Department of Mechanical Engineering, Worcester Polytechnic Institute, Worcester, Massachusetts 01609 (United States)
  3. Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204 (United States)
Publication Date:
OSTI Identifier:
22304139
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 22; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ADHESION; CARBON NANOTUBES; EPOXIDES; EQUATIONS; FLUORINATION; FRACTURE MECHANICS; FRACTURE PROPERTIES; FRACTURES; GRAPHENE; INTERFACES; MOLECULAR DYNAMICS METHOD; SCANNING ELECTRON MICROSCOPY; SIMULATION