Facile preparation of epoxy nanocomposites with highly dispersed graphite nanosheets and their dielectric properties

Kiwon Oh; Taeho Kim; Sang Soo Lee; Soonho Lim; Daeheum Kim; Heesuk Kim

doi:10.1007/s13233-012-0200-5

Facile preparation of epoxy nanocomposites with highly dispersed graphite nanosheets and their dielectric properties

Kiwon Oh
, Taeho Kim
, Sang Soo Lee
, Soonho Lim
, Daeheum Kim
, Heesuk Kim^*

^*Corresponding author for this work

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

7 Citations (Scopus)

Abstract

Very thin graphite nanosheets (GNSs) with 11 nm thickness and 250 nm in lateral size were simply prepared from bulk graphite via an ultrasonication and centrifugation in N,N-dimethylformamide (DMF) without any chemical treatments such as using surfactants. GNSs/epoxy nanocomposites with 3 wt% GNSs showed a high dielectric constant (710) and relatively low dielectric loss tangent (less than 0.5) at low frequency (100 Hz). This great improvement in the dielectric properties could be attributed to very thin thickness, excellent dispersibility and sheet-like shape of GNSs in comparison with graphite or thick GNSs.

Original language	English
Pages (from-to)	1197-1200
Number of pages	4
Journal	Macromolecular Research
Volume	20
Issue number	11
DOIs	https://doi.org/10.1007/s13233-012-0200-5
Publication status	Published - 2012 Nov

Keywords

Dielectric properties
Dispersion.
Graphite nanosheets
Nanocomposites

ASJC Scopus subject areas

General Chemical Engineering
Organic Chemistry
Polymers and Plastics
Materials Chemistry

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10.1007/s13233-012-0200-5

Cite this

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abstract = "Very thin graphite nanosheets (GNSs) with 11 nm thickness and 250 nm in lateral size were simply prepared from bulk graphite via an ultrasonication and centrifugation in N,N-dimethylformamide (DMF) without any chemical treatments such as using surfactants. GNSs/epoxy nanocomposites with 3 wt\% GNSs showed a high dielectric constant (710) and relatively low dielectric loss tangent (less than 0.5) at low frequency (100 Hz). This great improvement in the dielectric properties could be attributed to very thin thickness, excellent dispersibility and sheet-like shape of GNSs in comparison with graphite or thick GNSs.",

keywords = "Dielectric properties, Dispersion., Graphite nanosheets, Nanocomposites",

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AU - Oh, Kiwon

AU - Kim, Taeho

AU - Lee, Sang Soo

AU - Lim, Soonho

AU - Kim, Daeheum

AU - Kim, Heesuk

PY - 2012/11

Y1 - 2012/11

N2 - Very thin graphite nanosheets (GNSs) with 11 nm thickness and 250 nm in lateral size were simply prepared from bulk graphite via an ultrasonication and centrifugation in N,N-dimethylformamide (DMF) without any chemical treatments such as using surfactants. GNSs/epoxy nanocomposites with 3 wt% GNSs showed a high dielectric constant (710) and relatively low dielectric loss tangent (less than 0.5) at low frequency (100 Hz). This great improvement in the dielectric properties could be attributed to very thin thickness, excellent dispersibility and sheet-like shape of GNSs in comparison with graphite or thick GNSs.

AB - Very thin graphite nanosheets (GNSs) with 11 nm thickness and 250 nm in lateral size were simply prepared from bulk graphite via an ultrasonication and centrifugation in N,N-dimethylformamide (DMF) without any chemical treatments such as using surfactants. GNSs/epoxy nanocomposites with 3 wt% GNSs showed a high dielectric constant (710) and relatively low dielectric loss tangent (less than 0.5) at low frequency (100 Hz). This great improvement in the dielectric properties could be attributed to very thin thickness, excellent dispersibility and sheet-like shape of GNSs in comparison with graphite or thick GNSs.

KW - Dielectric properties

KW - Dispersion.

KW - Graphite nanosheets

KW - Nanocomposites

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JO - Macromolecular Research

JF - Macromolecular Research

IS - 11

ER -

Facile preparation of epoxy nanocomposites with highly dispersed graphite nanosheets and their dielectric properties

Abstract

Keywords

ASJC Scopus subject areas

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