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Title: Mechanical strength of boron nitride nanotube-polymer interfaces

We investigate the mechanical strength of boron nitride nanotube (BNNT) polymer interfaces by using in situ electron microscopy nanomechanical single-tube pull-out techniques. The nanomechanical measurements show that the shear strengths of BNNT-epoxy and BNNT-poly(methyl methacrylate) interfaces reach 323 and 219 MPa, respectively. Molecular dynamics simulations reveal that the superior load transfer capacity of BNNT-polymer interfaces is ascribed to both the strong van der Waals interactions and Coulomb interactions on BNNT-polymer interfaces. The findings of the extraordinary mechanical strength of BNNT-polymer interfaces suggest that BNNTs are excellent reinforcing nanofiller materials for light-weight and high-strength polymer nanocomposites.
Authors:
;  [1] ; ;  [2] ;  [3] ;  [4] ;  [3]
  1. Department of Mechanical Engineering, State University of New York at Binghamton, Binghamton, New York 13902 (United States)
  2. College of Engineering, University of Georgia, Athens, Georgia 30602 (United States)
  3. NASA Langley Research Center, Hampton, Virginia 23681 (United States)
  4. (United States)
Publication Date:
OSTI Identifier:
22486283
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 25; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BORON NITRIDES; ELECTRON MICROSCOPY; INTERFACES; METHACRYLIC ACID ESTERS; NANOCOMPOSITES; NANOTUBES; POLYMERS; SHEAR PROPERTIES; SIMULATION; VAN DER WAALS FORCES