Molecular Orientation of Neat and Clay Nanocompounded iPP Using Uniaxial Film Extrusion，2007高分子材料加工国际学术会议（5.18-5.20 北京）-中国聚合物网,论文下载

Molecular Orientation of Neat and Clay Nanocompounded iPP Using Uniaxial Film Extrusion

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关键词：

Molecular Orientation Neat Clay Nanocompounded iPP Using
Uniaxial Film Extrusion

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78K

所属学科：

分子表征

来源：

2007高分子材料加工国际学术会议（5.18-5.20 北京）

简介：

Oneofthemostimportantpropertiesduringfilmprocessingismolecularorientation.Thiswilldictatetheultimatefilmcharacteristicsanditcanbechangedwithprocessingvariablesandmeasuredwithexperimentallaboratorytechniques.Thetheoreticaluniaxialorientationprinciplesallowingoneorthethreecrystallographicaxistoorientwithrespecttothestretchingdirectionarewellknown1,2.Typicalmolecularorientationmeasurementsinvolveinfra-reddichroism,birefringence,andX-raydiffraction1,2,however,somemoresophisticatedtechniques,suchasBrilloiunscattering3,haverecentlybeenused.ClaynanocompoundediPP4isarelativelynewpolymericsystemwiththepotentialtobroadentheiPPpracticalapplications.Thereareseveralreportednanocompoundingmethods4,5,6,althoughtwoofthemoststudiedaredirectmixing5,andmixingusingmaleicanhydride6asacompatibilizer.Inthisstudy,wehaveusedinfra-reddichroismandopticalbirefringenceinordertodeterminemolecularorientationofneatandnanocompoundediPP.This,intermsofthemainvariablesinvolvedinalaboratoryuniaxialfilmextrusionmachine,andalsointermsoftwoclaynanocompoundedpreparationmethods.

作者：

J. Medellín-Rodríguez

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2007-09-04 15:00:56

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