Dielectric performance of polymer-based composites containing core-shell Ag@TiO2 nanoparticle fillers

This paper reports composites prepared by embedding core-shell Ag@TiO2 fillers into polytetrafluoroethylene. Ag nanoparticles were homogeneously coated with TiO2, to give a shell thickness of approximately ∼8–10 nm. The composite containing Ag@TiO2 nanoparticles with rutile shells exhibited better d...

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Veröffentlicht in:	Applied physics letters 2016-02, Vol.108 (7)
Hauptverfasser:	Liang, Fei, Zhang, Lu, Lu, Wen-Zhong, Wan, Qian-Xing, Fan, Gui-Fen
Format:	Artikel
Sprache:	eng
Schlagworte:	Anatase Applied physics Dielectric properties Fillers Nanoparticles Percolation theory Permittivity Polymer matrix composites Polytetrafluoroethylene Shells Silver Titanium dioxide
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container_title	Applied physics letters
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creator	Liang, Fei Zhang, Lu Lu, Wen-Zhong Wan, Qian-Xing Fan, Gui-Fen
description	This paper reports composites prepared by embedding core-shell Ag@TiO2 fillers into polytetrafluoroethylene. Ag nanoparticles were homogeneously coated with TiO2, to give a shell thickness of approximately ∼8–10 nm. The composite containing Ag@TiO2 nanoparticles with rutile shells exhibited better dielectric properties than the composite containing Ag@TiO2 nanoparticles with anatase shells. The relative permittivity (εr) of the composite containing 70 vol. % filler was approximately 240 at 100 Hz, which was more than 100 times higher than that of pure polytetrafluoroethylene (εr = 2.1). An effective medium percolation theory model is used to account for the dielectric constant of the composite.
doi_str_mv	10.1063/1.4942096
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Ag nanoparticles were homogeneously coated with TiO2, to give a shell thickness of approximately ∼8–10 nm. The composite containing Ag@TiO2 nanoparticles with rutile shells exhibited better dielectric properties than the composite containing Ag@TiO2 nanoparticles with anatase shells. The relative permittivity (εr) of the composite containing 70 vol. % filler was approximately 240 at 100 Hz, which was more than 100 times higher than that of pure polytetrafluoroethylene (εr = 2.1). An effective medium percolation theory model is used to account for the dielectric constant of the composite.</description><identifier>ISSN: 0003-6951</identifier><identifier>EISSN: 1077-3118</identifier><identifier>DOI: 10.1063/1.4942096</identifier><identifier>CODEN: APPLAB</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Anatase ; Applied physics ; Dielectric properties ; Fillers ; Nanoparticles ; Percolation theory ; Permittivity ; Polymer matrix composites ; Polytetrafluoroethylene ; Shells ; Silver ; Titanium dioxide</subject><ispartof>Applied physics letters, 2016-02, Vol.108 (7)</ispartof><rights>AIP Publishing LLC</rights><rights>2016 AIP Publishing LLC.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c327t-6365de4241a2f7d9a4aa646a74c486a8a876129ad4edded62888a69e61a00fec3</citedby><cites>FETCH-LOGICAL-c327t-6365de4241a2f7d9a4aa646a74c486a8a876129ad4edded62888a69e61a00fec3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/apl/article-lookup/doi/10.1063/1.4942096$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>314,776,780,790,4497,27903,27904,76131</link.rule.ids></links><search><creatorcontrib>Liang, Fei</creatorcontrib><creatorcontrib>Zhang, Lu</creatorcontrib><creatorcontrib>Lu, Wen-Zhong</creatorcontrib><creatorcontrib>Wan, Qian-Xing</creatorcontrib><creatorcontrib>Fan, Gui-Fen</creatorcontrib><title>Dielectric performance of polymer-based composites containing core-shell Ag@TiO2 nanoparticle fillers</title><title>Applied physics letters</title><description>This paper reports composites prepared by embedding core-shell Ag@TiO2 fillers into polytetrafluoroethylene. Ag nanoparticles were homogeneously coated with TiO2, to give a shell thickness of approximately ∼8–10 nm. The composite containing Ag@TiO2 nanoparticles with rutile shells exhibited better dielectric properties than the composite containing Ag@TiO2 nanoparticles with anatase shells. The relative permittivity (εr) of the composite containing 70 vol. % filler was approximately 240 at 100 Hz, which was more than 100 times higher than that of pure polytetrafluoroethylene (εr = 2.1). 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subjects	Anatase Applied physics Dielectric properties Fillers Nanoparticles Percolation theory Permittivity Polymer matrix composites Polytetrafluoroethylene Shells Silver Titanium dioxide
title	Dielectric performance of polymer-based composites containing core-shell Ag@TiO2 nanoparticle fillers
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