Charge transport properties of composites of multiwalled carbon nanotube with metal catalyst and polymer: Application to electromagnetic interference shielding

H. M. Kim; K. Kim; S. J. Lee; J. Joo; H. S. Yoon; S. J. Cho; S. C. Lyu; C. J. Lee

doi:10.1016/j.cap.2004.01.022

Charge transport properties of composites of multiwalled carbon nanotube with metal catalyst and polymer: Application to electromagnetic interference shielding

H. M. Kim, K. Kim, S. J. Lee, J. Joo, H. S. Yoon, S. J. Cho, S. C. Lyu, C. J. Lee

Research output: Contribution to journal › Article › peer-review

93 Citations (Scopus)

Abstract

We report charge transport properties such as d.c. conductivity (σ_DC) and its temperature dependence for composites of poly(methyl methacrylate) (PMMA) and multiwalled carbon nanotubes (MWCNTs). The MWCNTs were synthesized through chemical vapor deposition with Fe or Co as catalyst. The MWCNTs were homogeneously dispersed in PMMA matrix through sonication to prepare MWCNT-PMMA composite films. We controlled mass concentration of MWCNTs in the composites, and the thickness of MWCNT-PMMA composite films was 20-400 μm. Scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and Raman spectroscopy were used to study structure and homogeneity of the composites. The σ_DC at room temperature of MWCNT- PMMA composites increased as mass concentration of MWCNTs increased, which followed percolation theory. Electromagnetic interference (EMI) shielding efficiency (SE) of MWCNT-PMMA composites was measured in the frequency range of 50 MHz-3.5 GHz. We observed the increase of EMI SE of MWCNT-PMMA composites with increasing the concentration of MWCNTs.

Original language	English
Pages (from-to)	577-580
Number of pages	4
Journal	Current Applied Physics
Volume	4
Issue number	6
DOIs	https://doi.org/10.1016/j.cap.2004.01.022
Publication status	Published - 2004 Nov

Bibliographical note

Funding Information:
This work was supported in part by the IMT-2000 Project, Ministry of Commerce, Industry, and Energy, Korea and the BK-21.

Keywords

Composite
Electrical conductivity
Electromagnetic interference shielding
Multiwalled carbon nanotube

ASJC Scopus subject areas

General Materials Science
General Physics and Astronomy

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10.1016/j.cap.2004.01.022

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@article{1793720c5cef4a11a0040952856dba2f,

title = "Charge transport properties of composites of multiwalled carbon nanotube with metal catalyst and polymer: Application to electromagnetic interference shielding",

abstract = "We report charge transport properties such as d.c. conductivity (σDC) and its temperature dependence for composites of poly(methyl methacrylate) (PMMA) and multiwalled carbon nanotubes (MWCNTs). The MWCNTs were synthesized through chemical vapor deposition with Fe or Co as catalyst. The MWCNTs were homogeneously dispersed in PMMA matrix through sonication to prepare MWCNT-PMMA composite films. We controlled mass concentration of MWCNTs in the composites, and the thickness of MWCNT-PMMA composite films was 20-400 μm. Scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and Raman spectroscopy were used to study structure and homogeneity of the composites. The σDC at room temperature of MWCNT- PMMA composites increased as mass concentration of MWCNTs increased, which followed percolation theory. Electromagnetic interference (EMI) shielding efficiency (SE) of MWCNT-PMMA composites was measured in the frequency range of 50 MHz-3.5 GHz. We observed the increase of EMI SE of MWCNT-PMMA composites with increasing the concentration of MWCNTs.",

keywords = "Composite, Electrical conductivity, Electromagnetic interference shielding, Multiwalled carbon nanotube",

author = "Kim, {H. M.} and K. Kim and Lee, {S. J.} and J. Joo and Yoon, {H. S.} and Cho, {S. J.} and Lyu, {S. C.} and Lee, {C. J.}",

note = "Funding Information: This work was supported in part by the IMT-2000 Project, Ministry of Commerce, Industry, and Energy, Korea and the BK-21.",

year = "2004",

month = nov,

doi = "10.1016/j.cap.2004.01.022",

language = "English",

volume = "4",

pages = "577--580",

journal = "Current Applied Physics",

issn = "1567-1739",

publisher = "Elsevier B.V.",

number = "6",

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TY - JOUR

T1 - Charge transport properties of composites of multiwalled carbon nanotube with metal catalyst and polymer

T2 - Application to electromagnetic interference shielding

AU - Kim, H. M.

AU - Kim, K.

AU - Lee, S. J.

AU - Joo, J.

AU - Yoon, H. S.

AU - Cho, S. J.

AU - Lyu, S. C.

AU - Lee, C. J.

N1 - Funding Information: This work was supported in part by the IMT-2000 Project, Ministry of Commerce, Industry, and Energy, Korea and the BK-21.

PY - 2004/11

Y1 - 2004/11

N2 - We report charge transport properties such as d.c. conductivity (σDC) and its temperature dependence for composites of poly(methyl methacrylate) (PMMA) and multiwalled carbon nanotubes (MWCNTs). The MWCNTs were synthesized through chemical vapor deposition with Fe or Co as catalyst. The MWCNTs were homogeneously dispersed in PMMA matrix through sonication to prepare MWCNT-PMMA composite films. We controlled mass concentration of MWCNTs in the composites, and the thickness of MWCNT-PMMA composite films was 20-400 μm. Scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and Raman spectroscopy were used to study structure and homogeneity of the composites. The σDC at room temperature of MWCNT- PMMA composites increased as mass concentration of MWCNTs increased, which followed percolation theory. Electromagnetic interference (EMI) shielding efficiency (SE) of MWCNT-PMMA composites was measured in the frequency range of 50 MHz-3.5 GHz. We observed the increase of EMI SE of MWCNT-PMMA composites with increasing the concentration of MWCNTs.

AB - We report charge transport properties such as d.c. conductivity (σDC) and its temperature dependence for composites of poly(methyl methacrylate) (PMMA) and multiwalled carbon nanotubes (MWCNTs). The MWCNTs were synthesized through chemical vapor deposition with Fe or Co as catalyst. The MWCNTs were homogeneously dispersed in PMMA matrix through sonication to prepare MWCNT-PMMA composite films. We controlled mass concentration of MWCNTs in the composites, and the thickness of MWCNT-PMMA composite films was 20-400 μm. Scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and Raman spectroscopy were used to study structure and homogeneity of the composites. The σDC at room temperature of MWCNT- PMMA composites increased as mass concentration of MWCNTs increased, which followed percolation theory. Electromagnetic interference (EMI) shielding efficiency (SE) of MWCNT-PMMA composites was measured in the frequency range of 50 MHz-3.5 GHz. We observed the increase of EMI SE of MWCNT-PMMA composites with increasing the concentration of MWCNTs.

KW - Composite

KW - Electrical conductivity

KW - Electromagnetic interference shielding

KW - Multiwalled carbon nanotube

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DO - 10.1016/j.cap.2004.01.022

M3 - Article

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Charge transport properties of composites of multiwalled carbon nanotube with metal catalyst and polymer: Application to electromagnetic interference shielding

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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