交联型聚琥珀酸丁酯奈米复合材料AStudyofCrosslinkedPoly.ppt
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交联型聚琥珀酸丁酯奈米复合材料AStudyofCrosslinkedPoly.ppt

交联型聚琥珀酸丁酯奈米复合材料AStudyofCrosslinkedPoly.ppt

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IntroductionExperimentMaterialsPreparationofsamplesMeasurementResultsanddiscussionConclusionsSincethelastcentury,plasticindustryhasdevelopedsofastthatplasticproductshavegaineduniversalapplicationinmanyfields.However,mostoftheplasticproductsarenotbiodegradable,andthiscausesseriousenvironmentalpollution.Amongaliphaticpolyesters,poly(butylenesuccinate)(PBS)hasrelativelyhighermeltingtemperatureandotherexcellentproperties.However,theinsufficientmechanicalpropertiesofPBShavepreventeditfrombeingusedindiverseapplications.CrosslinkingisanothereffectivemethodtoimprovethepropertiesofPBS.Materials(1/2)Poly(butylenesuccinate)(聚琥珀酸丁酯,PBS)Montmorillonite(奈米蒙脫土,MMT)(HT:hydrogenatedTallow)Materials(2/2)DicumylPeroxide(過氧化二異丙苯,DCP)Triallylisocyanurate(三烯丙基異三聚氰酸酯,TAIC)Preparationofsamples1.ModificationofMontmorillonite2.PreparationofsamplesPBSMechanismTable1ThecompositionandcodeofsamplesMeasurementThermalGravimetricAnalyzer(熱重分析儀,TGA)DifferentialScanningCalorimeter(微差掃描式熱分析儀,DSC)PolarizingOpticalMicroscope(偏光顯微鏡,POM)GelfractionofcrosslinkedPBS(交聯程度測試)Biodegradability(生物分解性實驗)Waterabsorption(吸水性實驗)Table2ThesamplesofgelfractionTGAanalysisDSCanalysisPOMobservationPOMobservationBiodegradationofcrosslinkedPBSWaterabsorptiontest1.ThemodifiedmontmorillonitecanenhancethethermalstabilityofPBS.2.Gelfractionincreasedwithincreasingcontentofthecrosslinkingagent.3.Ascrosslinkedhappened,Tcshiftedtohighertemperatures,andthedegreeofcrystallinitydecreasedslightly.4.ThedegradationrateofPBSwasdecreasedwiththeintroductionofcrosslinkedstructure.5.Inwaterabsorptiontesting,theresultsrevealthatPBSisahydrophobicmaterialandthemontmorillonite-containingsampletendstobeahydrophilicmaterial.19利用索氏萃取(Soxhletextraction)裝置,取適量交聯後之PBS樣品,並秤其重量We使用氯仿為溶劑,於80℃下,萃取24小時,將樣品中未交聯之分子洗去,再將交聯之樣品烘乾之後秤重Wf,即可計算其交聯度(Gelfraction)。先將試片,各別秤重記錄初始重量Wa,放入樣品瓶中,加入含有酵素之緩衝溶液中,於往復式震盪恆溫水槽中,於50℃下,轉速175rpm下震盪。每48小時將樣品