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

資料類型：

Word文件

關(guān)鍵詞：

Molecular Orientation Neat Clay Nanocompounded iPP Using
Uniaxial Film Extrusion

資料大小：

78K

所屬學(xué)科：

分子表征

來源：

2007高分子材料加工國際學(xué)術(shù)會(huì)議（5.18-5.20 北京）

簡(jiǎn)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

上傳時(shí)間：

2007-09-04 15:00:56

下載次數(shù)：

595

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