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The Synthesis and Properties of Nanoscale Ionic Materials Based on Graphene  
The Synthesis and Properties of Nanoscale Ionic Materials Based on Graphene
資料類型: PDF文件
關(guān)鍵詞: graphene  nanoscale  ionic  materials  suspension  rheology  
資料大?。?/td> 107K
所屬學科: 分子表征
來源: 第六屆亞歐研討會上處理和性能增強聚合物會議文集(2013.6.2-6 武漢)
簡介:
Nanoscaleionicmaterials(NIMs)areatypeoforganic-inorganichybridmaterialsconsistingofinorganicnanocores,chargedcoronacovalentlyattachedtothecore9andoppositelychargedcanopyelectrostaticallycoupledwiththecorona[l].Thiskindofself-suspended,nanoparticle-ladenmaterialscanshowtheliquid-likeflowbehaviorintheabsenceofsolvents.Here,wepresentthepreparationandphysicalcharacterizationresultsofgraphenebasedonNIMs,whichstartedfromthehydroxyl-functionalizedgraphene(G-OH)obtainedbyutilizingnitrenechemistryE21.Thetheologicalpropertiesofourgraphene-NIMscouldbetunedinawiderangefromNewtonianfluidtosoftglassysolidbyvaryingthevolumefractionofcanopy.Thegraphene-NIMalsoshowedaviscoelasticbehaviorthatwasdifferentfromthatofthephysicalmixtureofG-OHandcanopyoligomerwiththesamesolidcontent.Thecrystallizationtemperatureofcanopyingraphene-NIMsdecreasedalotcomparedtothatofcanopyinthephysicalmixtures.Moreover,acoldcrystallizationprocessappearedduringtheheatingcycleforgraphene-NIMs,whichdidnotexistforthephysicalmixtures.Thesephenomenarevealedthatthespecificionicinteractioninthiskindofnanoscalefluidshadsignificantinfluencesontheirflowandthermalpropertiesc3].Furthermore,theobtainedgraphene-NIMcouldbewelldispersedandbestableformonthsinwater,andmanyorganicsolventswithbothhighandlowpolarity,whichindicateditsamphiphilicnature.Theseuniquepropertiesassociatedwithgraphene-NIMscanhelptoopenupnewapplicationsinmanyfieldsbasedongraphenematerialinthefuture.
作者: L. S. Wu, B. Q. Zhang, C. Y. Liu
上傳時間: 2013-06-28 16:57:11
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