Highly stretchable dielectric nanocomposites based on single-walled carbon nanotube/ionic liquid gels

Kiwon Oh; Jang Yeol Lee; Sang Soo Lee; Min Park; Daeheum Kim; Heesuk Kim

doi:10.1016/j.compscitech.2013.04.004

Highly stretchable dielectric nanocomposites based on single-walled carbon nanotube/ionic liquid gels

Kiwon Oh, Jang Yeol Lee, Sang Soo Lee, Min Park, Daeheum Kim, Heesuk Kim

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

42 Citations (Scopus)

Abstract

We fabricated a highly stretchable dielectric composite using ionic liquid-based single-walled carbon nanotube gel (IL-SWCNT) as a dielectric filler and polydimethylsiloxane (PDMS) as an elastomer matrix. Transmission electron microscopy images showed that the SWCNTs were highly exfoliated and dispersed in the polymer matrix due to the addition of the ionic liquid (IL). The dielectric constant at 100. Hz of the IL-SWCNT/PDMS composite containing 1.6. wt% SWCNTs was twice that of the SWCNT/PDMS composite without IL, and the dielectric loss was one fifth that of the SWCNT/PDMS composite. In addition, the elastic modulus of the IL-SWCNT/PDMS composite was significantly lower (0.36. MPa at a strain of 20%) and the strain at break was higher (350%) compared to the corresponding values of the SWCNT/PDMS composites due to the plasticizer effects of the IL. These results provide the first feasibility study of the use of IL as both an exfoliation agent and a plasticizer in an effort to simultaneously improve the dielectric and mechanical properties of CNT-filled dielectric elastomers.

Original language	English
Pages (from-to)	40-46
Number of pages	7
Journal	Composites Science and Technology
Volume	83
DOIs	https://doi.org/10.1016/j.compscitech.2013.04.004
Publication status	Published - 2013 Jun 28

Bibliographical note

Funding Information:
This research was supported by KIST internal project. The work was also partially supported by the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy (MKE) and the metropolitan economic region base institution support program of MKE [Sensibility touch platform development and new industrialization support program – Development of multi-touch sensor development with 10% more tactile and three-step more texture representation]. The present research was conducted under a research grant from the Kwangwoon University, provided in 2011.

Keywords

A. Carbon nanotubes
A. Flexible composites
A. Polymer-matrix composites (PMCs)
B. Electrical properties
B. Mechanical properties

ASJC Scopus subject areas

Ceramics and Composites
General Engineering

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10.1016/j.compscitech.2013.04.004

Cite this

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title = "Highly stretchable dielectric nanocomposites based on single-walled carbon nanotube/ionic liquid gels",

abstract = "We fabricated a highly stretchable dielectric composite using ionic liquid-based single-walled carbon nanotube gel (IL-SWCNT) as a dielectric filler and polydimethylsiloxane (PDMS) as an elastomer matrix. Transmission electron microscopy images showed that the SWCNTs were highly exfoliated and dispersed in the polymer matrix due to the addition of the ionic liquid (IL). The dielectric constant at 100. Hz of the IL-SWCNT/PDMS composite containing 1.6. wt% SWCNTs was twice that of the SWCNT/PDMS composite without IL, and the dielectric loss was one fifth that of the SWCNT/PDMS composite. In addition, the elastic modulus of the IL-SWCNT/PDMS composite was significantly lower (0.36. MPa at a strain of 20%) and the strain at break was higher (350%) compared to the corresponding values of the SWCNT/PDMS composites due to the plasticizer effects of the IL. These results provide the first feasibility study of the use of IL as both an exfoliation agent and a plasticizer in an effort to simultaneously improve the dielectric and mechanical properties of CNT-filled dielectric elastomers.",

keywords = "A. Carbon nanotubes, A. Flexible composites, A. Polymer-matrix composites (PMCs), B. Electrical properties, B. Mechanical properties",

author = "Kiwon Oh and Lee, {Jang Yeol} and Lee, {Sang Soo} and Min Park and Daeheum Kim and Heesuk Kim",

note = "Funding Information: This research was supported by KIST internal project. The work was also partially supported by the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy (MKE) and the metropolitan economic region base institution support program of MKE [Sensibility touch platform development and new industrialization support program – Development of multi-touch sensor development with 10% more tactile and three-step more texture representation]. The present research was conducted under a research grant from the Kwangwoon University, provided in 2011. ",

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T1 - Highly stretchable dielectric nanocomposites based on single-walled carbon nanotube/ionic liquid gels

AU - Oh, Kiwon

AU - Lee, Jang Yeol

AU - Lee, Sang Soo

AU - Park, Min

AU - Kim, Daeheum

AU - Kim, Heesuk

N1 - Funding Information: This research was supported by KIST internal project. The work was also partially supported by the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy (MKE) and the metropolitan economic region base institution support program of MKE [Sensibility touch platform development and new industrialization support program – Development of multi-touch sensor development with 10% more tactile and three-step more texture representation]. The present research was conducted under a research grant from the Kwangwoon University, provided in 2011.

PY - 2013/6/28

Y1 - 2013/6/28

N2 - We fabricated a highly stretchable dielectric composite using ionic liquid-based single-walled carbon nanotube gel (IL-SWCNT) as a dielectric filler and polydimethylsiloxane (PDMS) as an elastomer matrix. Transmission electron microscopy images showed that the SWCNTs were highly exfoliated and dispersed in the polymer matrix due to the addition of the ionic liquid (IL). The dielectric constant at 100. Hz of the IL-SWCNT/PDMS composite containing 1.6. wt% SWCNTs was twice that of the SWCNT/PDMS composite without IL, and the dielectric loss was one fifth that of the SWCNT/PDMS composite. In addition, the elastic modulus of the IL-SWCNT/PDMS composite was significantly lower (0.36. MPa at a strain of 20%) and the strain at break was higher (350%) compared to the corresponding values of the SWCNT/PDMS composites due to the plasticizer effects of the IL. These results provide the first feasibility study of the use of IL as both an exfoliation agent and a plasticizer in an effort to simultaneously improve the dielectric and mechanical properties of CNT-filled dielectric elastomers.

AB - We fabricated a highly stretchable dielectric composite using ionic liquid-based single-walled carbon nanotube gel (IL-SWCNT) as a dielectric filler and polydimethylsiloxane (PDMS) as an elastomer matrix. Transmission electron microscopy images showed that the SWCNTs were highly exfoliated and dispersed in the polymer matrix due to the addition of the ionic liquid (IL). The dielectric constant at 100. Hz of the IL-SWCNT/PDMS composite containing 1.6. wt% SWCNTs was twice that of the SWCNT/PDMS composite without IL, and the dielectric loss was one fifth that of the SWCNT/PDMS composite. In addition, the elastic modulus of the IL-SWCNT/PDMS composite was significantly lower (0.36. MPa at a strain of 20%) and the strain at break was higher (350%) compared to the corresponding values of the SWCNT/PDMS composites due to the plasticizer effects of the IL. These results provide the first feasibility study of the use of IL as both an exfoliation agent and a plasticizer in an effort to simultaneously improve the dielectric and mechanical properties of CNT-filled dielectric elastomers.

KW - A. Carbon nanotubes

KW - A. Flexible composites

KW - A. Polymer-matrix composites (PMCs)

KW - B. Electrical properties

KW - B. Mechanical properties

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VL - 83

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JO - Composites Science and Technology

JF - Composites Science and Technology

ER -

Highly stretchable dielectric nanocomposites based on single-walled carbon nanotube/ionic liquid gels

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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