Epoxy resin-based nanocomposite films with highly oriented BN nanosheets prepared using a nanosecond-pulse electric field

Facile orientation of boron nitride (BN) with high anisotropy in epoxy resin-based nanocomposite films was performed in a polyepoxide matrix using a nanosecond-pulse electric field to generate a high electric flux. Control of the BN anisotropy was achieved in the polymer without damaging the composi...

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Bibliographic Details
Published in:Materials letters 2011-08, Vol.65 (15), p.2426-2428
Main Authors: Cho, Hong-Baek, Tu, Nguyen Chung, Fujihara, Takeshi, Endo, Shin, Suzuki, Tsuneo, Tanaka, Satoshi, Jiang, Weihua, Suematsu, Hisayuki, Niihara, Koichi, Nakayama, Tadachika
Format: Article
Language:English
Subjects:
Anisotropy
BN nanosheet
boron
Boron nitride
crosslinking
electric field
Electric fields
Electric flux
epoxides
Nanocomposites
Nanomaterials
Nanosecond pulse
Nanostructure
Orientation
Polyepoxide
polymers
thermal diffusivity
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Summary:Facile orientation of boron nitride (BN) with high anisotropy in epoxy resin-based nanocomposite films was performed in a polyepoxide matrix using a nanosecond-pulse electric field to generate a high electric flux. Control of the BN anisotropy was achieved in the polymer without damaging the composite films or requiring surface modification of the BN. The degree of BN orientation perpendicular to the nanocomposite film plane, which was parallel to the electric flux, could be controlled by applying the nanosecond pulse for different lengths of time before cross-linking. The resulting composite films with oriented BN nanosheets manifested improved thermal diffusivity compared to a composite prepared without orientation. ► Epoxy-resin based nanocomposite films with highly-oriented BN nanosheets. ► Alignment of BN induced by a nanosecond electric field with no surface modification. ► Proportional increase of anisotropy of BN to the incubation time. ► Improvement of thermal diffusivity with increased orientation of BN.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2011.05.005