Gelation in carbon nanotube/polymer composites
Identifieur interne : 001704 ( Main/Exploration ); précédent : 001703; suivant : 001705Gelation in carbon nanotube/polymer composites
Auteurs : CHENYANG LIU [République populaire de Chine] ; JUN ZHANG [République populaire de Chine] ; JIASONG HE [République populaire de Chine] ; GUOHUA HU [France]Source :
- Polymer : (Guildford) [ 0032-3861 ] ; 2003.
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- Pascal (Inist)
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Abstract
The physical gelation in carbon nanotubes (CNTs)/polycarbonate composites was revealed by rheological analysis (Winter-Chambon method), based on the data reported by Paul [Polymer 43 (2002) 3247]. The gelation concentration cg, the relaxation exponent n and the gel strength Sg characterizing the critical gel point for the composites are 1.6 wt%, 0.75 and 770 Pa sn, respectively, which are comparable with those found for polymer gels. In fact, the gel points coincide with the percolation threshold of the electrical conductivity and the high strength in CNT/polymer composite applications. The new kind of physical gel originates from a combination of entanglement of CNTs and interactions between CNTs and polymer chains, instead of the chemical bonding or physical interactions in previous polymer gels.
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type="wicri:Area/Main/Exploration">001704</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Gelation in carbon nanotube/polymer composites</title><author><name sortKey="Chenyang Liu" sort="Chenyang Liu" uniqKey="Chenyang Liu" last="Chenyang Liu">CHENYANG LIU</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>State Key Laboratory of Engineering Plastics, Center for Molecular Science, Institute of Chemistry, The Chinese Academy of Sciences, Zhongguancun</s1><s2>Beijing 100080</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>République populaire de Chine</country><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Jun Zhang" sort="Jun Zhang" uniqKey="Jun Zhang" last="Jun Zhang">JUN ZHANG</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>State Key Laboratory of Engineering Plastics, Center for Molecular Science, Institute of Chemistry, The Chinese Academy of Sciences, Zhongguancun</s1><s2>Beijing 100080</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>République populaire de Chine</country><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Jiasong He" sort="Jiasong He" uniqKey="Jiasong He" last="Jiasong He">JIASONG HE</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>State Key Laboratory of Engineering Plastics, Center for Molecular Science, Institute of Chemistry, The Chinese Academy of Sciences, Zhongguancun</s1><s2>Beijing 100080</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>République populaire de Chine</country><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Guohua Hu" sort="Guohua Hu" uniqKey="Guohua Hu" last="Guohua Hu">GUOHUA HU</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Laboratory of Chemical Engineering Sciences, CNRS-ENSIC-INPL</s1><s2>54001 Nancy</s2><s3>FRA</s3><sZ>4 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><settlement type="city">Nancy</settlement></placeName></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="2003">2003</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>Carbon nanotubes</term><term>Concentration effect</term><term>Experimental study</term><term>Gelation</term><term>Molten state</term><term>Nanocomposite</term><term>Physical gel</term><term>Polycarbonate</term><term>Rheological properties</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Nanocomposite</term><term>Carbonate polymère</term><term>Nanotube carbone</term><term>Etat fondu</term><term>Propriété rhéologique</term><term>Gélification</term><term>Gel physique</term><term>Effet concentration</term><term>Etude expérimentale</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The physical gelation in carbon nanotubes (CNTs)/polycarbonate composites was revealed by rheological analysis (Winter-Chambon method), based on the data reported by Paul [Polymer 43 (2002) 3247]. The gelation concentration c<sub>g</sub>, the relaxation exponent n and the gel strength S<sub>g</sub> characterizing the critical gel point for the composites are 1.6 wt%, 0.75 and 770 Pa s<sup>n</sup>, respectively, which are comparable with those found for polymer gels. In fact, the gel points coincide with the percolation threshold of the electrical conductivity and the high strength in CNT/polymer composite applications. The new kind of physical gel originates from a combination of entanglement of CNTs and interactions between CNTs and polymer chains, instead of the chemical bonding or physical interactions in previous polymer gels.</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></list><tree><country name="République populaire de Chine"><noRegion><name sortKey="Chenyang Liu" sort="Chenyang Liu" uniqKey="Chenyang Liu" last="Chenyang Liu">CHENYANG LIU</name></noRegion><name sortKey="Jiasong He" sort="Jiasong He" uniqKey="Jiasong He" last="Jiasong He">JIASONG HE</name><name sortKey="Jun Zhang" sort="Jun Zhang" uniqKey="Jun Zhang" last="Jun Zhang">JUN ZHANG</name></country><country name="France"><region name="Grand Est"><name sortKey="Guohua Hu" sort="Guohua Hu" uniqKey="Guohua Hu" last="Guohua Hu">GUOHUA HU</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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