The Synthesis and Properties of Nanoscale Ionic Materials Based on Graphene，第六届亚欧研讨会上处理和性能增强聚合物会议文集（2013.6.2-6 武汉）-中国聚合物网,论文下载

The Synthesis and Properties of Nanoscale Ionic Materials Based on Graphene

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graphene nanoscale ionic materials suspension rheology

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分子表征

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第六届亚欧研讨会上处理和性能增强聚合物会议文集（2013.6.2-6 武汉）

简介：

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

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2013-06-28 16:57:11

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