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

KU-KIST Graduate School of Converging Science and Technology

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

6 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

Chemical Engineering(all)
Organic Chemistry
Polymers and Plastics
Materials Chemistry

Access to Document

10.1007/s13233-012-0200-5

Cite this

@article{8f4ea2ea7ba247ab8e62fa1958d7a4c0,

title = "Facile preparation of epoxy nanocomposites with highly dispersed graphite nanosheets and their dielectric properties",

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",

author = "Kiwon Oh and Taeho Kim and Lee, {Sang Soo} and Soonho Lim and Daeheum Kim and Heesuk Kim",

year = "2012",

month = nov,

doi = "10.1007/s13233-012-0200-5",

language = "English",

volume = "20",

pages = "1197--1200",

journal = "Macromolecular Research",

issn = "1598-5032",

publisher = "Polymer Society of Korea",

number = "11",

}

TY - JOUR

T1 - Facile preparation of epoxy nanocomposites with highly dispersed graphite nanosheets and their dielectric properties

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

UR - http://www.scopus.com/inward/record.url?scp=84871064130&partnerID=8YFLogxK

U2 - 10.1007/s13233-012-0200-5

DO - 10.1007/s13233-012-0200-5

M3 - Article

AN - SCOPUS:84871064130

SN - 1598-5032

VL - 20

SP - 1197

EP - 1200

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

Access to Document

Other files and links

Fingerprint

Cite this