Effect of the dispersibility of BaTiO3 nanoparticles in BaTiO3/polyimide composites on the dielectric properties

Seung Hoon Choi, Il Doo Kim, Jae Min Hong, Ki Hong Park, Seong Geun Oh

Research output: Contribution to journalArticle

63 Citations (Scopus)

Abstract

We have investigated the effect of coupling agents with different organic moiety on the dielectric properties of polyimide/BaTiO3 (70 nm) composite films. INAAT (isopropyl tris(N-amino-ethyl aminoethyl)titanate, KR 44) and APTS (3-amino-propyl-triethoxysilane) were used as coupling agents, respectively, for homogeneous dispersion of BaTiO3 particles into a polyimide matrix. The composite films were prepared by pyromellitic dianhydride (PMDA) and 4,4′-oxydianiline (ODA)-based polyimide. Enhanced dispersion of BaTiO3 particles was obtained by the use of INAAT with more organic moiety compared to that afforded by APTS. The polyimide composite with BaTiO3 particles (BaTiO3 content at 50 vol.%) treated by INAAT showed an increased dielectric constant of 19.03 while retaining an appropriate dielectric loss of 0.0109, as compared to the dielectric constant (14.64) of polyimide/APTS-treated BaTiO3 composite. The results of this work demonstrate the potential use of an INAAT coupling agent with more organo functional groups for obtaining enhanced dielectric properties in a polyimide/BaTiO3 composite for application in an embedded capacitor.

Original languageEnglish
Pages (from-to)2478-2481
Number of pages4
JournalMaterials Letters
Volume61
Issue number11-12
DOIs
StatePublished - 2007 May 1

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polyimides
Polyimides
Dielectric properties
dielectric properties
Nanoparticles
nanoparticles
composite materials
Coupling agents
Composite materials
Composite films
Permittivity
permittivity
Dielectric losses
retaining
dielectric loss
Functional groups
capacitors
Capacitors
matrices
amino-propyl-triethoxysilane

Cite this

Choi, Seung Hoon ; Kim, Il Doo ; Hong, Jae Min ; Park, Ki Hong ; Oh, Seong Geun. / Effect of the dispersibility of BaTiO3 nanoparticles in BaTiO3/polyimide composites on the dielectric properties. In: Materials Letters. 2007 ; Vol. 61, No. 11-12. pp. 2478-2481.
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Effect of the dispersibility of BaTiO3 nanoparticles in BaTiO3/polyimide composites on the dielectric properties. / Choi, Seung Hoon; Kim, Il Doo; Hong, Jae Min; Park, Ki Hong; Oh, Seong Geun.

In: Materials Letters, Vol. 61, No. 11-12, 01.05.2007, p. 2478-2481.

Research output: Contribution to journalArticle

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