Large dielectric constant of the chemically purified carbon nanotube/polymer composites

Qun Li; Qingzhong Xue; Qingbin Zheng; Lanzhong Hao; Xili Gao

doi:10.1016/j.matlet.2008.06.047

Large dielectric constant of the chemically purified carbon nanotube/polymer composites

Qun Li, Qingzhong Xue^*, Qingbin Zheng, Lanzhong Hao, Xili Gao

^*Corresponding author for this work

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

95 Citations (Scopus)

Abstract

The chemically purified multiwalled carbon nanotube/poly(vinylidene fluoride) (MWCNT/PVDF) composites were fabricated. Raman spectroscopy and transmission electron microscopy micrographs indicated that the catalysts metal particles and amorphous carbon had been removed from the purified MWCNTs. The percolation threshold of the composites is relatively large, about 3.8 vol.%. The most important result is that the dielectric constant of the composites is enhanced remarkably, and the dielectric constant of 3600 is obtained in the composite with 8 vol.% purified MWCNT at 1 kHz. The large dielectric constant can be attributed to the preparation procedure and the interface effect between the MWCNTs and the polymer.

Original language	English
Pages (from-to)	4229-4231
Number of pages	3
Journal	Materials Letters
Volume	62
Issue number	26
DOIs	https://doi.org/10.1016/j.matlet.2008.06.047
Publication status	Published - 15 Oct 2008
Externally published	Yes

Keywords

Carbon nanotube
Composite materials
Electrical properties
Percolation threshold

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10.1016/j.matlet.2008.06.047

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title = "Large dielectric constant of the chemically purified carbon nanotube/polymer composites",

abstract = "The chemically purified multiwalled carbon nanotube/poly(vinylidene fluoride) (MWCNT/PVDF) composites were fabricated. Raman spectroscopy and transmission electron microscopy micrographs indicated that the catalysts metal particles and amorphous carbon had been removed from the purified MWCNTs. The percolation threshold of the composites is relatively large, about 3.8 vol.\%. The most important result is that the dielectric constant of the composites is enhanced remarkably, and the dielectric constant of 3600 is obtained in the composite with 8 vol.\% purified MWCNT at 1 kHz. The large dielectric constant can be attributed to the preparation procedure and the interface effect between the MWCNTs and the polymer.",

keywords = "Carbon nanotube, Composite materials, Electrical properties, Percolation threshold",

author = "Qun Li and Qingzhong Xue and Qingbin Zheng and Lanzhong Hao and Xili Gao",

year = "2008",

month = oct,

day = "15",

doi = "10.1016/j.matlet.2008.06.047",

language = "English",

volume = "62",

pages = "4229--4231",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

number = "26",

}

TY - JOUR

T1 - Large dielectric constant of the chemically purified carbon nanotube/polymer composites

AU - Li, Qun

AU - Xue, Qingzhong

AU - Zheng, Qingbin

AU - Hao, Lanzhong

AU - Gao, Xili

PY - 2008/10/15

Y1 - 2008/10/15

N2 - The chemically purified multiwalled carbon nanotube/poly(vinylidene fluoride) (MWCNT/PVDF) composites were fabricated. Raman spectroscopy and transmission electron microscopy micrographs indicated that the catalysts metal particles and amorphous carbon had been removed from the purified MWCNTs. The percolation threshold of the composites is relatively large, about 3.8 vol.%. The most important result is that the dielectric constant of the composites is enhanced remarkably, and the dielectric constant of 3600 is obtained in the composite with 8 vol.% purified MWCNT at 1 kHz. The large dielectric constant can be attributed to the preparation procedure and the interface effect between the MWCNTs and the polymer.

AB - The chemically purified multiwalled carbon nanotube/poly(vinylidene fluoride) (MWCNT/PVDF) composites were fabricated. Raman spectroscopy and transmission electron microscopy micrographs indicated that the catalysts metal particles and amorphous carbon had been removed from the purified MWCNTs. The percolation threshold of the composites is relatively large, about 3.8 vol.%. The most important result is that the dielectric constant of the composites is enhanced remarkably, and the dielectric constant of 3600 is obtained in the composite with 8 vol.% purified MWCNT at 1 kHz. The large dielectric constant can be attributed to the preparation procedure and the interface effect between the MWCNTs and the polymer.

KW - Carbon nanotube

KW - Composite materials

KW - Electrical properties

KW - Percolation threshold

UR - https://www.webofscience.com/wos/woscc/full-record/WOS:000258908600018

UR - https://openalex.org/W2140469587

UR - https://www.scopus.com/pages/publications/48449098059

U2 - 10.1016/j.matlet.2008.06.047

DO - 10.1016/j.matlet.2008.06.047

M3 - Journal Article

SN - 0167-577X

VL - 62

SP - 4229

EP - 4231

JO - Materials Letters

JF - Materials Letters

IS - 26

ER -

Large dielectric constant of the chemically purified carbon nanotube/polymer composites

Abstract

Keywords

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