资源描述：
《荧光染料,纳米棒双语报告》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、DepartmentofChemistryandChemicalEngineering,ChinaWestNormalUniversityThereportonchemicalexperimentExperiment:ShapeRecoveryofshapememoryDolymerbasedonchemicallcross-linkedpoly(vinylacohol)Course:Student:GradeClassStudentID:Position:Instructor:ExperimentCondition:Tem
2、perature°CRelativeHumidity:AtmospherePressureDate:MonthDayYearObjectives:1.TounderstandtheimportantofthesafeglassofPVB2.TograspthesynthesisprocedureofPVBPrinciple:Shapememoryhavethecapabilitytostoreandrecoverlargestrainsinresponsetospecificenvironmentalstimuli:temp
3、erature,pH,magneticfieldandlightect,Structurally,SMPsarepolymernetworksequippedWithasuitableswitchingstructure,thenetpointscanbephysicalentanglementofpolymerchainsorchemicalcross-linking,determiningthepermanentshape,whiletheswitchingstructurecanbecrystallineoramorp
4、housprovidingpropertiesofprimarilyrecoveryandenergyabsorption.Allpolymerscanexhibittheshapememoryeffect.Materials&Apparatus:Chemicalagentspolyvinylalcoholglutaraldehyde36%hydrogenchloridedeionizedwaterApparatusmagneticstirrerinjectorbeakershapeglasstubesProcedure&P
5、henomena(includingthefiguresofexperimentdevices):1、Inatypeexperiment,0.4mLGAwasaddedto10mLaqueousPVAsolution(8wt%)withpH=4.Afterhomogeneousstirring,themixturewasinjectedintocertainshapedglasstubes,withadiameterof5mm.thecross-linkingreactionwasconductedfor36hatroomt
6、emperature(25°C).2、ThesamplewaswashedwithdeionizedwatertoremovethecatalyticHC1;andthenitwasdriedfor48hatroomtemperatureinairandundervacuum.ExperimentRecords&Datawecanseethephenomenonthataftertheexperiment,thetransparentmaterialwasgotten.ExperimentalResults:Thetrans
7、parentmaterialwasgotten.Discussions:(1)Whateffectisthehydrogenchloride?Answer:Addinghydrogenchloride,inordertomodifythepHvalueofmixturetoanaciddegree,promptthemixtureformscolloidalsubstance・(2)Whatismeaningoftheglasstransitiontemperature?Answer:Polymerbyhighelastic
8、stateintoglassstatetemperature,referstotheamorphouspolymer(includinganamorphouspartofthecrystallinepolymer)fromtheglassystatetothehighelasticstat
