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Creating Filler/Matrix Interfacial Bonding by Metal Ion Coordination : Graphene Oxide/Polymer Nanocomposites with Significantly Enhanced Mechanical Properties  
Creating Filler/Matrix Interfacial Bonding by Metal Ion Coordination : Graphene Oxide/Polymer Nanocomposites with Significantly Enhanced Mechanical Properties
資料類型: PDF文件
關(guān)鍵詞: graphene  oxide  polymers  nanocomposites  coordination  mechanical  properties  
資料大?。?/td> 105K
所屬學(xué)科: 分子表征
來源: 第六屆亞歐研討會上處理和性能增強(qiáng)聚合物會議文集(2013.6.2-6 武漢)
簡介:
Graphene,themostrecentlyfoundallotropeofthecarbonfamily,hasprovokedresearchinterestworldwideduetoitsoutstandingelectronic,mechanicalandthermalpropertiescl].Nowadays,afunctionalizedgraphenederivative,grapheneoxide(GO),isavailableinlargequantitiesinaqueoussolutionbyoxidizingnaturalgraphitec2].ThemechanicalpropertiesofGOarecomparabletothoseofgraphene.Besides,GObearsabundantoxygenmoieties,whichfacilitatefurtherchemicalmodificationandcross-linking,e.g.,bymetalioncoordinationc3].IncludingGOindifferentpolymer-matrixnanocompositeshasbeenasubjectofintenseresearchrecently.Forexample,itisfoundthatGOcansignificantlyenhancethemechanicalpropertiesofsuchwater-solublepolymersaspoly(vinylalcohol)(PVA)andpoly(ethyleneoxide)(PEO).Solution-phasephysicalmixingofthefillerandthematrixisusedinthesecases.Toachieveasignificantreinforcingeffect,stronginterfacialbondingbetweenthefillerandthematrixispreferred.ConsideringtheabundantoxygenmoietiesonGOandPVAorPEOwhicharefavorableformetalioncoordination,wereporthereasimple,cost-effectivewaytocreatestrongfiller/matrixinterfacialbondingbyintroducingcopperionsintheirmixedsolution.ThecoordinationbondingbetweenGOandPVAorPEObycopperionsinducescross-linking,whichtranslatesintobettermechanicalpropertiesthanthoseofGO/PVAorPEOnanocompositespreparedbymerephysicalmixingofthetwocomponents.Thiswaymayopenupanewopportunityforhigh-performancepolymer-matrixnanocomposites.
作者: X. M. Xie, N. Chen, Y. T. Liu, C. Lin
上傳時間: 2013-06-27 11:32:24
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