Improved Dielectric Properties of Nanocomposites Based on Poly(vinylidene fluoride) and Poly(vinyl alcohol)-Functionalized Graphene
Identifieur interne : 000687 ( Hal/Checkpoint ); précédent : 000686; suivant : 000688Improved Dielectric Properties of Nanocomposites Based on Poly(vinylidene fluoride) and Poly(vinyl alcohol)-Functionalized Graphene
Auteurs : Dongrui Wang [République populaire de Chine] ; Yaru Bao [République populaire de Chine] ; Jun-Wei Zha [République populaire de Chine] ; Jun Zhao [République populaire de Chine] ; Zhi-Min Dang [République populaire de Chine] ; Guo-Hua Hu [France]Source :
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Abstract
n this work, two series of nanocomposites of poly(vinylidene fluoride) (PVDF) incorporated with reduced graphene oxide (rGO) and poly(vinyl alcohol)-modified rGO (rGO-PVA) were fabricated using solution-cast method and their dielectric properties were carefully characterized. Infrared spectroscopy and atom force microscope analysis indicated that PVA chains were successfully grafted onto graphene through ester linkage. The PVA functionalization of graphene surface can not only prevent the agglomeration of original rGO but also enhance the interaction between PVDF and rGO-PVA. Strong hydrogen bonds and charge transfer effect between rGO-PVA and PVDF were determined by infrared and Raman spectroscopies. The dielectric properties of rGO-PVA/PVDF and rGO/PVDF nanocomposites were investigated in a frequency range from 10(2) Hz to 10(2) Hz. Both composite systems exhibited an insulator-to-conductor percolating transition as the increase of the filler content. The percolation thresholds were estimated to be 2.24 vol % for rGO-PVA/PVDF composites and 0.61 vol % for rGO/PVDF composites, respectively. Near the percolation threshold, the dielectric permittivity of the nanocomposites was significantly promoted, which can be well explained by interfacial polarization effect and microcapacitor model. Compared to rGO/PVDF composites, higher dielectric constant and lower loss factor were simultaneously achieved in rGO-PVA/PVDF nanocomposites at a frequency range lower than 1 X 10(3) Hz. This work provides a potential design strategy based on graphene Interface engineering, which would lead to higher-performance flexible dielectric materials.
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DOI: 10.1021/am3018652
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Infrared spectroscopy and atom force microscope analysis indicated that PVA chains were successfully grafted onto graphene through ester linkage. The PVA functionalization of graphene surface can not only prevent the agglomeration of original rGO but also enhance the interaction between PVDF and rGO-PVA. Strong hydrogen bonds and charge transfer effect between rGO-PVA and PVDF were determined by infrared and Raman spectroscopies. The dielectric properties of rGO-PVA/PVDF and rGO/PVDF nanocomposites were investigated in a frequency range from 10(2) Hz to 10(2) Hz. Both composite systems exhibited an insulator-to-conductor percolating transition as the increase of the filler content. The percolation thresholds were estimated to be 2.24 vol % for rGO-PVA/PVDF composites and 0.61 vol % for rGO/PVDF composites, respectively. Near the percolation threshold, the dielectric permittivity of the nanocomposites was significantly promoted, which can be well explained by interfacial polarization effect and microcapacitor model. Compared to rGO/PVDF composites, higher dielectric constant and lower loss factor were simultaneously achieved in rGO-PVA/PVDF nanocomposites at a frequency range lower than 1 X 10(3) Hz. This work provides a potential design strategy based on graphene Interface engineering, which would lead to higher-performance flexible dielectric materials.</div></front></TEI><hal api="V3"><titleStmt><title xml:lang="en">Improved Dielectric Properties of Nanocomposites Based on Poly(vinylidene fluoride) and Poly(vinyl alcohol)-Functionalized Graphene</title><author role="aut"><persName><forename type="first">Dongrui</forename><surname>Wang</surname></persName><email></email><idno type="halauthor">807574</idno><affiliation ref="#struct-133558"></affiliation></author><author role="aut"><persName><forename type="first">Yaru</forename><surname>Bao</surname></persName><email></email><idno type="halauthor">807575</idno><affiliation ref="#struct-133558"></affiliation></author><author role="aut"><persName><forename type="first">Jun-Wei</forename><surname>Zha</surname></persName><email></email><idno type="halauthor">383688</idno><affiliation ref="#struct-133558"></affiliation></author><author role="aut"><persName><forename type="first">Jun</forename><surname>Zhao</surname></persName><email></email><idno type="halauthor">748848</idno><affiliation ref="#struct-133558"></affiliation></author><author role="crp"><persName><forename type="first">Zhi-Min</forename><surname>Dang</surname></persName><email>dangzm@ustb.edu.cn</email><idno type="halauthor">532145</idno><affiliation ref="#struct-133558"></affiliation></author><author role="aut"><persName><forename type="first">Guo-Hua</forename><surname>Hu</surname></persName><email>guo-hua.hu@univ-lorraine.fr</email><idno type="halauthor">805871</idno><affiliation ref="#struct-56663"></affiliation><affiliation ref="#struct-211875"></affiliation></author><editor role="depositor"><persName><forename>Gabriel</forename><surname>Wild</surname></persName><email>gabriel.wild@univ-lorraine.fr</email></editor><funder>NSFC 51103011 51073015 Fundamental Research Funds for the Central Universities FRF-TP-11-003B Ministry of Sciences and Technology of China 2010DFA51490</funder></titleStmt><editionStmt><edition n="v1" type="current"><date type="whenSubmitted">2013-01-19 21:53:11</date><date type="whenWritten">2012</date><date type="whenModified">2016-05-10 16:53:05</date><date type="whenReleased">2013-01-19 21:53:11</date><date type="whenProduced">2012-11</date></edition><respStmt><resp>contributor</resp><name key="179637"><persName><forename>Gabriel</forename><surname>Wild</surname></persName><email>gabriel.wild@univ-lorraine.fr</email></name></respStmt></editionStmt><publicationStmt><distributor>CCSD</distributor><idno type="halId">hal-00778386</idno><idno type="halUri">https://hal.archives-ouvertes.fr/hal-00778386</idno><idno type="halBibtex">wang:hal-00778386</idno><idno type="halRefHtml">ACS Applied Materials & Interfaces, American Chemical Society, 2012, 4 (11), pp.6273-6279. <10.1021/am3018652></idno><idno type="halRef">ACS Applied Materials & Interfaces, American Chemical Society, 2012, 4 (11), pp.6273-6279. <10.1021/am3018652></idno></publicationStmt><seriesStmt><idno type="stamp" n="CNRS">CNRS - Centre national de la recherche scientifique</idno><idno type="stamp" n="UNIV-LORRAINE">Université de Lorraine</idno><idno type="stamp" n="LRGP-UL">LRGP</idno></seriesStmt><notesStmt><note type="audience" n="2">International</note><note type="popular" n="0">No</note><note type="peer" n="1">Yes</note></notesStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Improved Dielectric Properties of Nanocomposites Based on Poly(vinylidene fluoride) and Poly(vinyl alcohol)-Functionalized Graphene</title><author role="aut"><persName><forename type="first">Dongrui</forename><surname>Wang</surname></persName><idno type="halAuthorId">807574</idno><affiliation ref="#struct-133558"></affiliation></author><author role="aut"><persName><forename type="first">Yaru</forename><surname>Bao</surname></persName><idno type="halAuthorId">807575</idno><affiliation ref="#struct-133558"></affiliation></author><author role="aut"><persName><forename type="first">Jun-Wei</forename><surname>Zha</surname></persName><idno type="halAuthorId">383688</idno><affiliation ref="#struct-133558"></affiliation></author><author role="aut"><persName><forename type="first">Jun</forename><surname>Zhao</surname></persName><idno type="halAuthorId">748848</idno><affiliation ref="#struct-133558"></affiliation></author><author role="crp"><persName><forename type="first">Zhi-Min</forename><surname>Dang</surname></persName><email>dangzm@ustb.edu.cn</email><idno type="halAuthorId">532145</idno><affiliation ref="#struct-133558"></affiliation></author><author role="aut"><persName><forename type="first">Guo-Hua</forename><surname>Hu</surname></persName><email>guo-hua.hu@univ-lorraine.fr</email><idno type="halAuthorId">805871</idno><affiliation ref="#struct-56663"></affiliation><affiliation ref="#struct-211875"></affiliation></author></analytic><monogr><idno type="halJournalId" status="VALID">66743</idno><title level="j">ACS Applied Materials & Interfaces</title><imprint><publisher>American Chemical Society</publisher><biblScope unit="volume">4</biblScope><biblScope unit="issue">11</biblScope><biblScope unit="pp">6273-6279</biblScope><date type="datePub">2012-11</date></imprint></monogr><idno type="doi">10.1021/am3018652</idno></biblStruct></sourceDesc><profileDesc><langUsage><language ident="en">English</language></langUsage><textClass><keywords scheme="author"><term xml:lang="en">nanocomposite</term><term xml:lang="en">graphene</term><term xml:lang="en">poly(vinylidene fluoride)</term><term xml:lang="en">poly(vinyl alcohol)</term><term xml:lang="en">interface</term><term xml:lang="en">dielectric permittivity</term><term xml:lang="en">REORIENTATIONAL DYNAMICS</term><term xml:lang="en">ARTIFICIAL MUSCLES</term><term xml:lang="en">GRAPHITE OXIDE</term><term xml:lang="en">COMPOSITES</term><term xml:lang="en">ALCOHOL)</term><term xml:lang="en">POLYMERIZATION</term><term xml:lang="en">PERMITTIVITY</term><term xml:lang="en">SPECTROSCOPY</term><term xml:lang="en">BLENDS</term></keywords><classCode scheme="halDomain" n="spi.gproc">Engineering Sciences [physics]/Chemical and Process Engineering</classCode><classCode scheme="halDomain" n="chim.poly">Chemical Sciences/Polymers</classCode><classCode scheme="halTypology" n="ART">Journal articles</classCode></textClass><abstract xml:lang="en">n this work, two series of nanocomposites of poly(vinylidene fluoride) (PVDF) incorporated with reduced graphene oxide (rGO) and poly(vinyl alcohol)-modified rGO (rGO-PVA) were fabricated using solution-cast method and their dielectric properties were carefully characterized. Infrared spectroscopy and atom force microscope analysis indicated that PVA chains were successfully grafted onto graphene through ester linkage. The PVA functionalization of graphene surface can not only prevent the agglomeration of original rGO but also enhance the interaction between PVDF and rGO-PVA. Strong hydrogen bonds and charge transfer effect between rGO-PVA and PVDF were determined by infrared and Raman spectroscopies. The dielectric properties of rGO-PVA/PVDF and rGO/PVDF nanocomposites were investigated in a frequency range from 10(2) Hz to 10(2) Hz. Both composite systems exhibited an insulator-to-conductor percolating transition as the increase of the filler content. The percolation thresholds were estimated to be 2.24 vol % for rGO-PVA/PVDF composites and 0.61 vol % for rGO/PVDF composites, respectively. Near the percolation threshold, the dielectric permittivity of the nanocomposites was significantly promoted, which can be well explained by interfacial polarization effect and microcapacitor model. Compared to rGO/PVDF composites, higher dielectric constant and lower loss factor were simultaneously achieved in rGO-PVA/PVDF nanocomposites at a frequency range lower than 1 X 10(3) Hz. This work provides a potential design strategy based on graphene Interface engineering, which would lead to higher-performance flexible dielectric materials.</abstract></profileDesc></hal></record>Pour manipuler ce document sous Unix (Dilib)
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