Giant dielectric permittivities in functionalized carbon-nanotube/ electroactive-polymer nanocomposites

Zhi Min Dang; Lan Wang; Yi Yin; Qing Zhang; Qing Qua Lei

doi:10.1002/adma.200600703

Giant dielectric permittivities in functionalized carbon-nanotube/ electroactive-polymer nanocomposites

Zhi Min Dang
, Lan Wang
, Yi Yin
, Qing Zhang
, Qing Qua Lei

Beijing University of Chemical Technology
Shanghai Jiao Tong University
Tsinghua University
Harbin University of Science and Technology

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

825 Scopus citations

Abstract

The synthesis of multiwalled-carbon nanotubes/poly(vinylidene fluoride) (MWNT/PVDF) nanocomposites was investigated using wet-chemistry technique. The pure MWNTs were modified with 3,4,5-trifluorobromobenzene (TFBB) using wet-chemistry procedure. TFP-MWNTs were obtained by using a Grignard reaction with 3,4,5-trofluorobromophenylmagnesium, which was formed in diethyl ether from magnesium and TFBB. TFP-MWNts were ultrasonically dispersed in N,N-dimethylformamide (DMF) to form a stable suspension. The properties of the chemically modified TFP-MWNT/PVDF composites were characterized by TEM and XPS. It was observed that functionalization of MWNTs with (TFBB) created MWNT/PVDF electroactive polymer composites (EAPC), which exhibited high dielectric permittivity (ε≈ 8000) compared to TFP-MWNTs. Result shows that TFP-MCNTs exhibit giant dielectric permittivity due to Maxwell-Wagner-Sillars (MWS) effect at percolation and a thin insulating layer of PVDF.

Original language	English
Pages (from-to)	852-857
Number of pages	6
Journal	Advanced Materials
Volume	19
Issue number	6
DOIs	https://doi.org/10.1002/adma.200600703
State	Published - 19 Mar 2007
Externally published	Yes

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@article{f7d2590055fb4e689387cc50ca11c912,

title = "Giant dielectric permittivities in functionalized carbon-nanotube/ electroactive-polymer nanocomposites",

abstract = "The synthesis of multiwalled-carbon nanotubes/poly(vinylidene fluoride) (MWNT/PVDF) nanocomposites was investigated using wet-chemistry technique. The pure MWNTs were modified with 3,4,5-trifluorobromobenzene (TFBB) using wet-chemistry procedure. TFP-MWNTs were obtained by using a Grignard reaction with 3,4,5-trofluorobromophenylmagnesium, which was formed in diethyl ether from magnesium and TFBB. TFP-MWNts were ultrasonically dispersed in N,N-dimethylformamide (DMF) to form a stable suspension. The properties of the chemically modified TFP-MWNT/PVDF composites were characterized by TEM and XPS. It was observed that functionalization of MWNTs with (TFBB) created MWNT/PVDF electroactive polymer composites (EAPC), which exhibited high dielectric permittivity (ε≈ 8000) compared to TFP-MWNTs. Result shows that TFP-MCNTs exhibit giant dielectric permittivity due to Maxwell-Wagner-Sillars (MWS) effect at percolation and a thin insulating layer of PVDF.",

author = "Dang, \{Zhi Min\} and Lan Wang and Yi Yin and Qing Zhang and Lei, \{Qing Qua\}",

year = "2007",

month = mar,

day = "19",

doi = "10.1002/adma.200600703",

language = "英语",

volume = "19",

pages = "852--857",

journal = "Advanced Materials",

issn = "0935-9648",

publisher = "Wiley-Blackwell",

number = "6",

}

TY - JOUR

T1 - Giant dielectric permittivities in functionalized carbon-nanotube/ electroactive-polymer nanocomposites

AU - Dang, Zhi Min

AU - Wang, Lan

AU - Yin, Yi

AU - Zhang, Qing

AU - Lei, Qing Qua

PY - 2007/3/19

Y1 - 2007/3/19

N2 - The synthesis of multiwalled-carbon nanotubes/poly(vinylidene fluoride) (MWNT/PVDF) nanocomposites was investigated using wet-chemistry technique. The pure MWNTs were modified with 3,4,5-trifluorobromobenzene (TFBB) using wet-chemistry procedure. TFP-MWNTs were obtained by using a Grignard reaction with 3,4,5-trofluorobromophenylmagnesium, which was formed in diethyl ether from magnesium and TFBB. TFP-MWNts were ultrasonically dispersed in N,N-dimethylformamide (DMF) to form a stable suspension. The properties of the chemically modified TFP-MWNT/PVDF composites were characterized by TEM and XPS. It was observed that functionalization of MWNTs with (TFBB) created MWNT/PVDF electroactive polymer composites (EAPC), which exhibited high dielectric permittivity (ε≈ 8000) compared to TFP-MWNTs. Result shows that TFP-MCNTs exhibit giant dielectric permittivity due to Maxwell-Wagner-Sillars (MWS) effect at percolation and a thin insulating layer of PVDF.

AB - The synthesis of multiwalled-carbon nanotubes/poly(vinylidene fluoride) (MWNT/PVDF) nanocomposites was investigated using wet-chemistry technique. The pure MWNTs were modified with 3,4,5-trifluorobromobenzene (TFBB) using wet-chemistry procedure. TFP-MWNTs were obtained by using a Grignard reaction with 3,4,5-trofluorobromophenylmagnesium, which was formed in diethyl ether from magnesium and TFBB. TFP-MWNts were ultrasonically dispersed in N,N-dimethylformamide (DMF) to form a stable suspension. The properties of the chemically modified TFP-MWNT/PVDF composites were characterized by TEM and XPS. It was observed that functionalization of MWNTs with (TFBB) created MWNT/PVDF electroactive polymer composites (EAPC), which exhibited high dielectric permittivity (ε≈ 8000) compared to TFP-MWNTs. Result shows that TFP-MCNTs exhibit giant dielectric permittivity due to Maxwell-Wagner-Sillars (MWS) effect at percolation and a thin insulating layer of PVDF.

UR - https://www.scopus.com/pages/publications/34250634499

U2 - 10.1002/adma.200600703

DO - 10.1002/adma.200600703

M3 - 文章

AN - SCOPUS:34250634499

SN - 0935-9648

VL - 19

SP - 852

EP - 857

JO - Advanced Materials

JF - Advanced Materials

IS - 6

ER -

Giant dielectric permittivities in functionalized carbon-nanotube/ electroactive-polymer nanocomposites

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