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Title: Reorientation of Carbon Nanotubes in Polymer Matrix Composites using Compressive Loading

Abstract

Purified single-walled nanotubes (SWNTs) were dispersed in an epoxy polymer and subjected to uniaxial compressive loading. The orientation and stress in the nanotubes were monitored in situ using polarized Raman microscopy. At strains less than 2%, the nanotubes reorient normal to the direction of compression, thereby minimizing the local strain energy. Above 2% strain, the Raman peak shift reaches a plateau. A new analytical model, which approximates the SWNT reorientation by varying the aspect ratio of a representative spheroid, predicted the rotation behavior of nanotubes under load. The results of this model suggest that the observed plateau of the Raman peak shift is caused by both polymer yielding and interfacial debonding at the ends of nanotubes.

Authors:
 [1];  [1];  [1];  [1]
  1. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
939138
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Journal of Materials Research
Additional Journal Information:
Journal Volume: 20; Journal Issue: 4; Journal ID: ISSN 0884-2914
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; CARBON; NANOTUBES; ORIENTATION; MATRIX MATERIALS; POLYMERS; EPOXIDES

Citation Formats

Lance, Michael J, Hsueh, Chun-Hway, Ivanov, Ilia N, and Geohegan, David B. Reorientation of Carbon Nanotubes in Polymer Matrix Composites using Compressive Loading. United States: N. p., 2005. Web. doi:10.1557/JMR.2005.0139.
Lance, Michael J, Hsueh, Chun-Hway, Ivanov, Ilia N, & Geohegan, David B. Reorientation of Carbon Nanotubes in Polymer Matrix Composites using Compressive Loading. United States. https://doi.org/10.1557/JMR.2005.0139
Lance, Michael J, Hsueh, Chun-Hway, Ivanov, Ilia N, and Geohegan, David B. Sat . "Reorientation of Carbon Nanotubes in Polymer Matrix Composites using Compressive Loading". United States. https://doi.org/10.1557/JMR.2005.0139.
@article{osti_939138,
title = {Reorientation of Carbon Nanotubes in Polymer Matrix Composites using Compressive Loading},
author = {Lance, Michael J and Hsueh, Chun-Hway and Ivanov, Ilia N and Geohegan, David B},
abstractNote = {Purified single-walled nanotubes (SWNTs) were dispersed in an epoxy polymer and subjected to uniaxial compressive loading. The orientation and stress in the nanotubes were monitored in situ using polarized Raman microscopy. At strains less than 2%, the nanotubes reorient normal to the direction of compression, thereby minimizing the local strain energy. Above 2% strain, the Raman peak shift reaches a plateau. A new analytical model, which approximates the SWNT reorientation by varying the aspect ratio of a representative spheroid, predicted the rotation behavior of nanotubes under load. The results of this model suggest that the observed plateau of the Raman peak shift is caused by both polymer yielding and interfacial debonding at the ends of nanotubes.},
doi = {10.1557/JMR.2005.0139},
url = {https://www.osti.gov/biblio/939138}, journal = {Journal of Materials Research},
issn = {0884-2914},
number = 4,
volume = 20,
place = {United States},
year = {2005},
month = {1}
}