Dielectric properties of reduced graphene oxide/polypropylene composites with ultralow percolation threshold
Identifieur interne : 000725 ( Main/Exploration ); précédent : 000724; suivant : 000726Dielectric properties of reduced graphene oxide/polypropylene composites with ultralow percolation threshold
Auteurs : DONGRUI WANG [République populaire de Chine] ; XIAOMAN ZHANG [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 :
- Polymer : (Guildford) [ 0032-3861 ] ; 2013.
Descripteurs français
- Pascal (Inist)
English descriptors
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Abstract
In this paper, we report the preparation and dielectric properties of reduced graphene oxide/polypropylene (rGO/PP) composites with an ultralow percolation threshold as low as 0.033 vol%. This value is the lowest among those that have been reported in graphene-filled composites. The rGO/PP composites were prepared through a latex technique, which consists of an in-situ chemical reduction of graphene oxide in PP latex and a subsequent filtration. Scanning electron microscopy and X-ray diffraction measurements demonstrate that the homogeneous dispersion of rGO nanosheets in the PP matrix was realized. A blue shift in Raman G band of the rGO nanosheets was observed in the rGO/PP composites, indicating the strong interaction between the rGO filler and the PP matrix. In the frequency range from 102 Hz to 107 Hz, the rGO/PP composites showed an insulator-to-conductor percolation transition as the increase of the rGO loading. Near the percolation threshold, the dielectric permittivity of the rGO/PP composites underwent a significant change of three orders of magnitude. Moreover, the permittivity was found to be temperature dependent.
Affiliations:
- France, République populaire de Chine
- Grand Est, Lorraine (région)
- Nancy, Pékin
- Centre national de la recherche scientifique, Laboratoire réactions et génie des procédés, Université de Lorraine
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threshold</title><author><name sortKey="Dongrui Wang" sort="Dongrui Wang" uniqKey="Dongrui Wang" last="Dongrui Wang">DONGRUI WANG</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Polymer Science and Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing</s1><s2>Beijing 100083</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>République populaire de Chine</country><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Xiaoman Zhang" sort="Xiaoman Zhang" uniqKey="Xiaoman Zhang" last="Xiaoman Zhang">XIAOMAN ZHANG</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Polymer Science and Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing</s1><s2>Beijing 100083</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 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Hu</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>CNRS-Université de Lorraine, Laboratoire Reactions et Genie des Procédés, UPR3349, ENSIC, 1 rue Grandville, BP 20451</s1><s2>Nancy 54000</s2><s3>FRA</s3><sZ>6 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Grand Est</region><region type="old region" nuts="2">Lorraine (région)</region></placeName><orgName type="university">Université de Lorraine</orgName><placeName><settlement type="city">Nancy</settlement><region type="region" nuts="2">Grand Est</region><region type="region" nuts="2">Lorraine (région)</region></placeName><orgName type="laboratoire" n="5">Laboratoire réactions et génie des procédés</orgName><orgName type="university">Université de Lorraine</orgName><orgName type="institution">Centre national de la recherche scientifique</orgName></affiliation></author></analytic><series><title level="j" type="main">Polymer : (Guildford)</title><title level="j" type="abbreviated">Polymer : (Guildf.)</title><idno type="ISSN">0032-3861</idno><imprint><date when="2013">2013</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Polymer : (Guildford)</title><title level="j" type="abbreviated">Polymer : (Guildf.)</title><idno type="ISSN">0032-3861</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Concentration effect</term><term>Dielectric properties</term><term>Dispersion degree</term><term>Experimental study</term><term>Functional polymer</term><term>Graphene</term><term>Isotactic polymer</term><term>Manufacturing</term><term>Mixing</term><term>Morphology</term><term>Nanocomposite</term><term>Percolation</term><term>Propylene polymer</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Nanocomposite</term><term>Propène polymère</term><term>Polymère isotactique</term><term>Polymère fonctionnel</term><term>Graphène</term><term>Fabrication</term><term>Mélangeage</term><term>Morphologie</term><term>Degré dispersion</term><term>Propriété diélectrique</term><term>Percolation</term><term>Effet concentration</term><term>Etude expérimentale</term><term>Oxyde de graphène réduit</term><term>Méthode en dispersion</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">In this paper, we report the preparation and dielectric properties of reduced graphene oxide/polypropylene (rGO/PP) composites with an ultralow percolation threshold as low as 0.033 vol%. This value is the lowest among those that have been reported in graphene-filled composites. The rGO/PP composites were prepared through a latex technique, which consists of an in-situ chemical reduction of graphene oxide in PP latex and a subsequent filtration. Scanning electron microscopy and X-ray diffraction measurements demonstrate that the homogeneous dispersion of rGO nanosheets in the PP matrix was realized. A blue shift in Raman G band of the rGO nanosheets was observed in the rGO/PP composites, indicating the strong interaction between the rGO filler and the PP matrix. In the frequency range from 10<sup>2</sup> Hz to 10<sup>7</sup> Hz, the rGO/PP composites showed an insulator-to-conductor percolation transition as the increase of the rGO loading. Near the percolation threshold, the dielectric permittivity of the rGO/PP composites underwent a significant change of three orders of magnitude. Moreover, the permittivity was found to be temperature dependent.</div></front></TEI><affiliations><list><country><li>France</li><li>République populaire de Chine</li></country><region><li>Grand Est</li><li>Lorraine (région)</li></region><settlement><li>Nancy</li><li>Pékin</li></settlement><orgName><li>Centre national de la recherche scientifique</li><li>Laboratoire réactions et génie des procédés</li><li>Université de Lorraine</li></orgName></list><tree><country name="République populaire de Chine"><noRegion><name sortKey="Dongrui Wang" sort="Dongrui Wang" uniqKey="Dongrui Wang" last="Dongrui Wang">DONGRUI WANG</name></noRegion><name sortKey="Dang, Zhi Min" sort="Dang, Zhi Min" uniqKey="Dang Z" first="Zhi-Min" last="Dang">Zhi-Min Dang</name><name sortKey="Jun Zhao" sort="Jun Zhao" uniqKey="Jun Zhao" last="Jun Zhao">JUN ZHAO</name><name sortKey="Xiaoman Zhang" sort="Xiaoman Zhang" uniqKey="Xiaoman Zhang" last="Xiaoman Zhang">XIAOMAN ZHANG</name><name sortKey="Zha, Jun Wei" sort="Zha, Jun Wei" uniqKey="Zha J" first="Jun-Wei" last="Zha">Jun-Wei Zha</name></country><country name="France"><region name="Grand Est"><name sortKey="Hu, Guo Hua" sort="Hu, Guo Hua" uniqKey="Hu G" first="Guo-Hua" last="Hu">Guo-Hua Hu</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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