Effect of Organic Montmorillonite on the Cellular Structure and Mechanical Properties

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1、AdvancedMaterialsResearchVols641-642(2013)pp355-362Online:2013-01-11©(2013)TransTechPublications,Switzerlanddoi:10.4028/www.scientific.net/AMR.641-642.355EffectofOrganicMontmorilloniteontheCellularStructureandMechanicalPropertiesofPOE/EVA/OMMTNanocompositeFo

2、ams1,a1,b1,c2,dFuquanDeng,JianzhongMa,ChaohuaXueandZhouyangDuan1CollegeofResourceandEnvironment,ShaanxiUniversityofScienceandTechnology,Xi’an710021,China;2KeyLaboratoryofMinistryofEducationonChemicalScienceandTechnologyofLightChemicalAdditives,ShaanxiUnivers

3、ityofScienceandTechnology,Xi’an710021,Chinaaskddfq@126.combmajz@sust.edu.cn(correspondenceauthor)cxuech@zju.edu.cndduanzhouyang@sina.comKeywords:Ethyleneoctanecopolymer,Ethylenevinylacetatecopolymer,Organicmontmorillonite,FoamedMaterialsAbstract:Nanocomposit

4、efoamsbased-onethyleneoctenecopolymer(POE)/ethylenevinylacetate(EVA)copolymerwerepreparedbymeltingofPOE/EVAwithorganicmontmorillonite(OMMT)bypressurizedcuringathightemperature.Thecellularmicrostructureofthefoamedsampleswasobservedbyscanningelectronmicroscope

5、.TheeffectsofOMMTonthecellularstructureandmechanicalpropertiesofthePOE/EVA/OMMTnanocompositefoamswereinvestigated.ItwasfoundthatOMMTplayedanimportantroleinaffectingthemicrostructure.ComparingwithPOE/EVAfoamthenanocompositefoamswiththeadditionof1-3phrOMMTshow

6、edsmallercellsizeandthestructureuniformityoffoamswasimproved.ThedensityofPOE/EVA/OMMTnanocompositesampleswaslowerobviously,meanwhilethemechanicalpropertiesofthefoamedsampleswasenhanced.1.IntorductionNowadays,polymer-layeredsilicatenanocomposites(PLSN)havearo

7、usedwidespreadconcerninbothoftheindustryandtheacademia.PLSNexhibitadifferentpropertiescombinationcomparedwithconventionallyfilledpolymers,thusopeningnewtechnologicalandeconomicperspectives[1,2].Amongthenumerousnanomaterials,montmorillonite(MMT)playsanimportan

8、trole.ThecrystallatticeofMMTconsistsoftwo-dimensionallayerswhereacentraloctahedralsheetofaluminaormagnesiaisfusedtotwoexternalsilicatetrahedronbythetipsothattheoxygenionsoftheoctahedralsheetdoal