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Title: Comparison of quasistatic to impact mechanical properties of multiwall carbon nanotube/polycarbonate composites

Abstract

We report the quasistatic tensile and impact penetration properties (falling dart test) of injection-molded polycarbonate samples, as a function of multiwall carbon nanotube (MWNT) concentration (0.0-2.5%). The MWNT were incorporated by dilution of a commercial MWNT/polycarbonate masterbatch. The stiffness and quasistatic yield strength of the composites increased approximately linearly with MWNT concentration in all measurements. The energy absorbed in fracture was, however, a negative function of the MWNT concentration, and exhibited different dependencies in quasistatic and impact tests. Small-angle x-ray scattering (SAXS) showed that the dispersion of the MWNT was similar at all concentrations. The negative effects on energy absorption are attributed to agglomerates remaining in the samples, which were observed in optical microscopy and SAXS. Overall, there was a good correspondence between static and dynamic energy absorption.

Authors:
; ; ; ; ; ;  [1];  [2];  [2];  [2]
  1. (PSI)
  2. (
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
USDOE
OSTI Identifier:
1002797
Resource Type:
Journal Article
Resource Relation:
Journal Name: J. Mater. Res.; Journal Volume: 25; Journal Issue: (6) ; 06, 2010
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE; CARBON; DILUTION; ENERGY ABSORPTION; FLEXIBILITY; FRACTURES; IMPACT TESTS; MECHANICAL PROPERTIES; NANOTUBES; OPTICAL MICROSCOPY; POLYCARBONATES; SCATTERING; YIELD STRENGTH

Citation Formats

Brühwiler, Paul A., Barbezat, Michel, Necola, Adly, Kohls, Doug J., Bunk, Oliver, Schaefer, Dale W., Pötschke, Petra, EMMPA), UCIN), and Leibniz). Comparison of quasistatic to impact mechanical properties of multiwall carbon nanotube/polycarbonate composites. United States: N. p., 2010. Web. doi:10.1557/JMR.2010.0139.
Brühwiler, Paul A., Barbezat, Michel, Necola, Adly, Kohls, Doug J., Bunk, Oliver, Schaefer, Dale W., Pötschke, Petra, EMMPA), UCIN), & Leibniz). Comparison of quasistatic to impact mechanical properties of multiwall carbon nanotube/polycarbonate composites. United States. doi:10.1557/JMR.2010.0139.
Brühwiler, Paul A., Barbezat, Michel, Necola, Adly, Kohls, Doug J., Bunk, Oliver, Schaefer, Dale W., Pötschke, Petra, EMMPA), UCIN), and Leibniz). 2010. "Comparison of quasistatic to impact mechanical properties of multiwall carbon nanotube/polycarbonate composites". United States. doi:10.1557/JMR.2010.0139.
@article{osti_1002797,
title = {Comparison of quasistatic to impact mechanical properties of multiwall carbon nanotube/polycarbonate composites},
author = {Brühwiler, Paul A. and Barbezat, Michel and Necola, Adly and Kohls, Doug J. and Bunk, Oliver and Schaefer, Dale W. and Pötschke, Petra and EMMPA) and UCIN) and Leibniz)},
abstractNote = {We report the quasistatic tensile and impact penetration properties (falling dart test) of injection-molded polycarbonate samples, as a function of multiwall carbon nanotube (MWNT) concentration (0.0-2.5%). The MWNT were incorporated by dilution of a commercial MWNT/polycarbonate masterbatch. The stiffness and quasistatic yield strength of the composites increased approximately linearly with MWNT concentration in all measurements. The energy absorbed in fracture was, however, a negative function of the MWNT concentration, and exhibited different dependencies in quasistatic and impact tests. Small-angle x-ray scattering (SAXS) showed that the dispersion of the MWNT was similar at all concentrations. The negative effects on energy absorption are attributed to agglomerates remaining in the samples, which were observed in optical microscopy and SAXS. Overall, there was a good correspondence between static and dynamic energy absorption.},
doi = {10.1557/JMR.2010.0139},
journal = {J. Mater. Res.},
number = (6) ; 06, 2010,
volume = 25,
place = {United States},
year = 2010,
month =
}