Bent-shape effects of multi-walled carbon nanotube on the electrical conductivity and rheological properties of polycarbonate/multi-walled carbon nanotube nanocomposites

Mi Sun Han; Yun Kyun Lee; Chang Hun Yun; Heon Sang Lee; Cheol Jin Lee; Woo Nyon Kim

doi:10.1016/j.synthmet.2011.05.031

Bent-shape effects of multi-walled carbon nanotube on the electrical conductivity and rheological properties of polycarbonate/multi-walled carbon nanotube nanocomposites

Mi Sun Han, Yun Kyun Lee, Chang Hun Yun, Heon Sang Lee, Cheol Jin Lee, Woo Nyon Kim

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

6 Citations (Scopus)

Abstract

In this study, polycarbonate (PC)/multi-walled carbon nanotube (MWCNT) nancomposites have been prepared by pretreating MWCNT solutions with ultrasonication. We demonstrate that the electrical conductivity and rheological properties of PC/MWCNT nanocomposites strongly depend on the mesoscopic shape factor (l_sp/d), which is represented by the ratio between the static bending persistence length (l_sp) and outer diameter (d) of the MWCNT. The electrical conductivity of PC/MWCNT nanocomposites increases linearly with increasing (l_sp/d)² and the percolation threshold of PC/MWCNT nanocomposites decreases linearly with increasing (l _sp/d)² of MWCNTs. The storage modulus of PC/MWCNT nanocomposites increases linearly with increasing (l_sp/d)² of MWCNTs at all frequency ranges.

Original language	English
Pages (from-to)	1629-1634
Number of pages	6
Journal	Synthetic Metals
Volume	161
Issue number	15-16
DOIs	https://doi.org/10.1016/j.synthmet.2011.05.031
Publication status	Published - 2011 Aug

Bibliographical note

Funding Information:
This research was partly supported by a grant (code BB3-101 ) from Carbon Dioxide Reduction & Sequestration Research Center, one of the 21st Century Frontier Programs funded by the Ministry of Education, Science and Technology of Korean government . This work was partly supported by the grant from the Industrial technology development program of the Ministry of Knowledge Economy (MKE) of Korea . The author (M.S. Han) was supported by the Korea University Grant .

Keywords

Carbon nanotubes
Electrical conductivity
Percolation threshold
Polymer composites
Rheology

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.synthmet.2011.05.031

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title = "Bent-shape effects of multi-walled carbon nanotube on the electrical conductivity and rheological properties of polycarbonate/multi-walled carbon nanotube nanocomposites",

abstract = "In this study, polycarbonate (PC)/multi-walled carbon nanotube (MWCNT) nancomposites have been prepared by pretreating MWCNT solutions with ultrasonication. We demonstrate that the electrical conductivity and rheological properties of PC/MWCNT nanocomposites strongly depend on the mesoscopic shape factor (lsp/d), which is represented by the ratio between the static bending persistence length (lsp) and outer diameter (d) of the MWCNT. The electrical conductivity of PC/MWCNT nanocomposites increases linearly with increasing (lsp/d)2 and the percolation threshold of PC/MWCNT nanocomposites decreases linearly with increasing (l sp/d)2 of MWCNTs. The storage modulus of PC/MWCNT nanocomposites increases linearly with increasing (lsp/d)2 of MWCNTs at all frequency ranges.",

keywords = "Carbon nanotubes, Electrical conductivity, Percolation threshold, Polymer composites, Rheology",

author = "Han, {Mi Sun} and Lee, {Yun Kyun} and Yun, {Chang Hun} and Lee, {Heon Sang} and Lee, {Cheol Jin} and Kim, {Woo Nyon}",

note = "Funding Information: This research was partly supported by a grant (code BB3-101 ) from Carbon Dioxide Reduction & Sequestration Research Center, one of the 21st Century Frontier Programs funded by the Ministry of Education, Science and Technology of Korean government . This work was partly supported by the grant from the Industrial technology development program of the Ministry of Knowledge Economy (MKE) of Korea . The author (M.S. Han) was supported by the Korea University Grant .",

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AU - Yun, Chang Hun

AU - Lee, Heon Sang

AU - Lee, Cheol Jin

AU - Kim, Woo Nyon

N1 - Funding Information: This research was partly supported by a grant (code BB3-101 ) from Carbon Dioxide Reduction & Sequestration Research Center, one of the 21st Century Frontier Programs funded by the Ministry of Education, Science and Technology of Korean government . This work was partly supported by the grant from the Industrial technology development program of the Ministry of Knowledge Economy (MKE) of Korea . The author (M.S. Han) was supported by the Korea University Grant .

PY - 2011/8

Y1 - 2011/8

N2 - In this study, polycarbonate (PC)/multi-walled carbon nanotube (MWCNT) nancomposites have been prepared by pretreating MWCNT solutions with ultrasonication. We demonstrate that the electrical conductivity and rheological properties of PC/MWCNT nanocomposites strongly depend on the mesoscopic shape factor (lsp/d), which is represented by the ratio between the static bending persistence length (lsp) and outer diameter (d) of the MWCNT. The electrical conductivity of PC/MWCNT nanocomposites increases linearly with increasing (lsp/d)2 and the percolation threshold of PC/MWCNT nanocomposites decreases linearly with increasing (l sp/d)2 of MWCNTs. The storage modulus of PC/MWCNT nanocomposites increases linearly with increasing (lsp/d)2 of MWCNTs at all frequency ranges.

AB - In this study, polycarbonate (PC)/multi-walled carbon nanotube (MWCNT) nancomposites have been prepared by pretreating MWCNT solutions with ultrasonication. We demonstrate that the electrical conductivity and rheological properties of PC/MWCNT nanocomposites strongly depend on the mesoscopic shape factor (lsp/d), which is represented by the ratio between the static bending persistence length (lsp) and outer diameter (d) of the MWCNT. The electrical conductivity of PC/MWCNT nanocomposites increases linearly with increasing (lsp/d)2 and the percolation threshold of PC/MWCNT nanocomposites decreases linearly with increasing (l sp/d)2 of MWCNTs. The storage modulus of PC/MWCNT nanocomposites increases linearly with increasing (lsp/d)2 of MWCNTs at all frequency ranges.

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Bent-shape effects of multi-walled carbon nanotube on the electrical conductivity and rheological properties of polycarbonate/multi-walled carbon nanotube nanocomposites

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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