In situ transmission electron microscope tensile testing reveals structure-property relationships in carbon nanofibers

Allison M. Beese, Dimitry Papkov, Shuyou Li, Yuris Dzenis, Horacio D. Espinosa

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Tensile tests were performed on carbon nanofibers in situ a transmission electron microscope (TEM) using a microelectromechanical system (MEMS) tensile testing device. The carbon nanofibers tested in this study were produced via the electrospinning of polyacrylonitrile (PAN) into fibers, which are subsequently stabilized in an oxygen environment at 270 C and carbonized in nitrogen at 800 C. To investigate the relationship between the fiber molecular structure, diameter, and mechanical properties, nanofibers with diameters ranging from ∼100 to 300 nm were mounted onto a MEMS device using nanomanipulation inside the chamber of a Scanning Electron Microscope, and subsequently tested in tension in situ a TEM. The results show the dependence of strength and modulus on diameter, with a maximum modulus of 262 GPa and strength of 7.3 GPa measured for a 108 nm diameter fiber. In particular, through TEM evaluation of the structure of each individual nanofiber immediately prior to testing, we elucidate a dependence of mechanical properties on the molecular orientation of the graphitic structure: the strength and stiffness of the fibers increases with a higher degree of orientation of the 0 0 2 graphitic planes along the fiber axis, which coincides with decreasing fiber diameter.

Original languageEnglish (US)
Pages (from-to)246-253
Number of pages8
JournalCarbon
Volume60
DOIs
StatePublished - Aug 1 2013

Fingerprint

Carbon nanofibers
Tensile testing
Electron microscopes
Fibers
Nanofibers
MEMS
Mechanical properties
Molecular orientation
Polyacrylonitriles
Electrospinning
Molecular structure
Nitrogen
Stiffness
Oxygen
Scanning
Testing

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

Cite this

In situ transmission electron microscope tensile testing reveals structure-property relationships in carbon nanofibers. / Beese, Allison M.; Papkov, Dimitry; Li, Shuyou; Dzenis, Yuris; Espinosa, Horacio D.

In: Carbon, Vol. 60, 01.08.2013, p. 246-253.

Research output: Contribution to journalArticle

Beese, Allison M. ; Papkov, Dimitry ; Li, Shuyou ; Dzenis, Yuris ; Espinosa, Horacio D. / In situ transmission electron microscope tensile testing reveals structure-property relationships in carbon nanofibers. In: Carbon. 2013 ; Vol. 60. pp. 246-253.
@article{c25ee785ff41401aadef1e79b402dfd0,
title = "In situ transmission electron microscope tensile testing reveals structure-property relationships in carbon nanofibers",
abstract = "Tensile tests were performed on carbon nanofibers in situ a transmission electron microscope (TEM) using a microelectromechanical system (MEMS) tensile testing device. The carbon nanofibers tested in this study were produced via the electrospinning of polyacrylonitrile (PAN) into fibers, which are subsequently stabilized in an oxygen environment at 270 C and carbonized in nitrogen at 800 C. To investigate the relationship between the fiber molecular structure, diameter, and mechanical properties, nanofibers with diameters ranging from ∼100 to 300 nm were mounted onto a MEMS device using nanomanipulation inside the chamber of a Scanning Electron Microscope, and subsequently tested in tension in situ a TEM. The results show the dependence of strength and modulus on diameter, with a maximum modulus of 262 GPa and strength of 7.3 GPa measured for a 108 nm diameter fiber. In particular, through TEM evaluation of the structure of each individual nanofiber immediately prior to testing, we elucidate a dependence of mechanical properties on the molecular orientation of the graphitic structure: the strength and stiffness of the fibers increases with a higher degree of orientation of the 0 0 2 graphitic planes along the fiber axis, which coincides with decreasing fiber diameter.",
author = "Beese, {Allison M.} and Dimitry Papkov and Shuyou Li and Yuris Dzenis and Espinosa, {Horacio D.}",
year = "2013",
month = "8",
day = "1",
doi = "10.1016/j.carbon.2013.04.018",
language = "English (US)",
volume = "60",
pages = "246--253",
journal = "Carbon",
issn = "0008-6223",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - In situ transmission electron microscope tensile testing reveals structure-property relationships in carbon nanofibers

AU - Beese, Allison M.

AU - Papkov, Dimitry

AU - Li, Shuyou

AU - Dzenis, Yuris

AU - Espinosa, Horacio D.

PY - 2013/8/1

Y1 - 2013/8/1

N2 - Tensile tests were performed on carbon nanofibers in situ a transmission electron microscope (TEM) using a microelectromechanical system (MEMS) tensile testing device. The carbon nanofibers tested in this study were produced via the electrospinning of polyacrylonitrile (PAN) into fibers, which are subsequently stabilized in an oxygen environment at 270 C and carbonized in nitrogen at 800 C. To investigate the relationship between the fiber molecular structure, diameter, and mechanical properties, nanofibers with diameters ranging from ∼100 to 300 nm were mounted onto a MEMS device using nanomanipulation inside the chamber of a Scanning Electron Microscope, and subsequently tested in tension in situ a TEM. The results show the dependence of strength and modulus on diameter, with a maximum modulus of 262 GPa and strength of 7.3 GPa measured for a 108 nm diameter fiber. In particular, through TEM evaluation of the structure of each individual nanofiber immediately prior to testing, we elucidate a dependence of mechanical properties on the molecular orientation of the graphitic structure: the strength and stiffness of the fibers increases with a higher degree of orientation of the 0 0 2 graphitic planes along the fiber axis, which coincides with decreasing fiber diameter.

AB - Tensile tests were performed on carbon nanofibers in situ a transmission electron microscope (TEM) using a microelectromechanical system (MEMS) tensile testing device. The carbon nanofibers tested in this study were produced via the electrospinning of polyacrylonitrile (PAN) into fibers, which are subsequently stabilized in an oxygen environment at 270 C and carbonized in nitrogen at 800 C. To investigate the relationship between the fiber molecular structure, diameter, and mechanical properties, nanofibers with diameters ranging from ∼100 to 300 nm were mounted onto a MEMS device using nanomanipulation inside the chamber of a Scanning Electron Microscope, and subsequently tested in tension in situ a TEM. The results show the dependence of strength and modulus on diameter, with a maximum modulus of 262 GPa and strength of 7.3 GPa measured for a 108 nm diameter fiber. In particular, through TEM evaluation of the structure of each individual nanofiber immediately prior to testing, we elucidate a dependence of mechanical properties on the molecular orientation of the graphitic structure: the strength and stiffness of the fibers increases with a higher degree of orientation of the 0 0 2 graphitic planes along the fiber axis, which coincides with decreasing fiber diameter.

UR - http://www.scopus.com/inward/record.url?scp=84878569108&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84878569108&partnerID=8YFLogxK

U2 - 10.1016/j.carbon.2013.04.018

DO - 10.1016/j.carbon.2013.04.018

M3 - Article

AN - SCOPUS:84878569108

VL - 60

SP - 246

EP - 253

JO - Carbon

JF - Carbon

SN - 0008-6223

ER -