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

資料類型：

PDF文件

關鍵詞：

pla pbs in-situ reinforced blends vane extruder

資料大小：

109K

所屬學科：

分子表征

來源：

第六屆亞歐研討會上處理和性能增強聚合物會議文集（2013.6.2-6 武漢）

簡介：

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

上傳時間：

2013-06-21 14:57:38

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