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Significantly enhanced dielectric properties of ag-deposited (In1/2nb1/2)0.1ti0.9o2/pvdf polymer composites
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Metadata
Document Title
Significantly enhanced dielectric properties of ag-deposited (In1/2nb1/2)0.1ti0.9o2/pvdf polymer composites
Author
Tuichai W., Kum-Onsa P., Danwittayakul S., Manyam J., Harnchana V., Thongbai P., Phromviyo N., Chindaprasirt P.
Name from Authors Collection
Affiliations
Giant Dielectric and Computational Design Research Group (GD–CDR), Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand; National Metal and Materials Technology Center, National Science and Technology Development Agency, Thailand Science Park, Pathumthani, 12120, Thailand; National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand; Institute of Nanomaterials Research and Innovation for Energy (IN–RIE), NANOTEC–KKU RNN on Nanomaterials Research and Innovation for Energy, Khon Kaen University, Khon Kaen, 40002, Thailand; Sustainable Infrastructure Research and Development Center, Department of Civil Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen, 40002, Thailand
Type
Article
Source Title
Polymers
ISSN
20734360
Year
2021
Volume
13
Issue
11
Open Access
Gold, Green
Publisher
MDPI AG
DOI
10.3390/polym13111788
Abstract
The enhanced dielectric permittivity (ε′) while retaining a low loss tangent (tanδ) in silver nanoparticle−(In1/2Nb1/2)0.1Ti0.9O2/poly(vinylidene fluoride) (Ag-INTO/PVDF) composites with dif-ferent volume fractions of a filler (fAg-INTO) was investigated. The hybrid particles were fabricated by coating Ag nanoparticles onto the surface of INTO particles, as confirmed by X-ray diffraction. The ε′ of the Ag−INTO/PVDF composites could be significantly enhanced to ~86 at 1 kHz with a low tanδ of ~0.044. The enhanced ε′ value was approximately >8-fold higher than that of the pure PVDF polymer for the composite with fAg-INTO = 0.5. Furthermore, ε′ was nearly independent of frequency in the range of 102–106 Hz. Therefore, filling Ag−INTO hybrid particles into a PVDF matrix is an effective way to increase ε′ while retaining a low tanδ of polymer composites. The effective medium percolation theory model can be used to fit the experimental ε′ values with various fAg-INTO values. The greatly increased ε′ primarily originated from interfacial polarization at the conducting Ag na-noparticle–PVDF and Ag–INTO interfaces, and it was partially contributed by the high ε′ of INTO particles. A low tanδ was obtained because the formation of the conducting network in the polymer was inhibited by preventing the direct contact of Ag nanoparticles. © 2021 by the authors.
Funding Sponsor
Khon Kaen University; National Science and Technology Development Agency; Thailand Research Fund; National Nanotechnology Center; Synchrotron Light Research Institute; Ministry of Higher Education, Science, Research and Innovation, Thailand
License
CC BY
Rights
Author
Publication Source
Scopus