Study on Structure and Properties of PLA/PBS in-situ Reinforced Blends Prepared by Vane Extruder，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

Study on Structure and Properties of PLA/PBS in-situ Reinforced Blends Prepared by Vane Extruder

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pla pbs in-situ reinforced blends vane extruder

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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：

Withtheresearchanddevelopmentofhighperformancepolymermaterials,theproblemsofresources9environmentandenergymustbeconsideredinordertorealizesustainabledevelopmentofpolymerindustry.Therefore,itisadevelopmenttrendtoexploitanovelhighperformancebiodegradablepolymerfromrenewableresources.Anewblendingmethodhasbeenconcernedinrecentresearchanddevelopmentefforts,whichisemployedtogeneratesomedeformeddispersedphaseinsituduringbiodegradablepolymerblendingprocessingwithphysicalandchemicalmeansorexternalfieldchange.Itiswellprovedthatthedeformedmorphologyismoreeasilyrealizedinelongationalforcefieldinwhichthevelocitygradientisparallelwiththeconveyingdirection.Inordertoachievetheprocessbasedontheelongationalforcefield,QU[l‘2]designedapolymerprocessingequipmentdesignatedasvaneextruderinwhichthepolymerparticulatesareplasticizedandconveyedbynormalstress.Thevolumeelongationalforcefieldcanbegeneratedbyperiodicallychangingofthecavityvolumeinthevaneplasticatingandconveyingunits(VPCUs).ThroughthecontinuousmotionofthepolymermaterialsintheadjacentVPCUs,itcangenerateacontinuousvolumeelongationalforcefieldinthepolymerplasticatingandconveyingprocess.Inthisstudy,avaneextruderisemployedtopreparePoly(lacticacid)/Poly(butylenesuccinate)trulybiodegradablein-situreinforcedblendsunderdifferentprocessingparameters(temperatureandtimes)andthemorphologies,thermalpropertiesandmechanicalpropertiesofblendspreparedareanalyzed.MorphologicalobservationindicatedthatwithincreasingtheprocessingtimesthePLAparticlesizeofblendsbecamesmallerandtheshapeofthefracturesurfaceofPLAshowedovalshapeandlongstripundergoinglowtemperatureprocessing.TGAthermogramsshowedthattheorientedPLAdispersedwellinthematrixofPBSretardedtheflame.MechanicalstudiesrevealedthePLA/PBSblendsoflowtemperatureprocessingexhibitedoptimumelongationatbreakaswellastensilemodulus,tensilestrengthandimpactstrength,whichimpliesthatthein-situreinforcementofblendsisrealizedduringprocess.

作者：

J. P. Qu, H. Z. Chen, G. Z. Zhang

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2013-06-21 14:57:38

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