稀土離子和聚酰胺類高分子微凝膠顆粒相互作用的研究.pdf

1、江南大學碩士學位論文稀土離子和聚酰胺類高分子微凝膠顆粒相互作用的研究姓名：趙海峰申請學位級別：碩士專業(yè)：材料學指導教師：黃曉華陳明清20080501Abs仃actAbstractAsakindoftemperature—sensitivematerial，theapplicationofpoly(Nisopropylacrylamide)(PNIPAM)nanoparticlehasbeenpaidmuchattentioninrece

2、ntyearsInordertoobtainmultisensitivehydrogels，manystudieswerefocusedontheoreticexplanmionofthestimuli—responsemechanismandthecopolymerizationofNIPAMwimothermonomerstomodifytheirproperties，whichCanbeusedtodevelopthenewapp

3、licationsinthebiomedicalandfluorescencefieldBasedonthesynthesisofP(NIPAMco—AAc)microgelnanoparticlesbytheprecipitationcopolymerizationofNisopropylacrylamide、)l，itllacrylicacidinthepresenceofⅣN’methylenebisacrylamide(Bis)

4、inwateranewkindofthecomplexofrareearthions(Terbium，Europium)andP州IPAM—COAAc)withthenoveltemperature—responsive，pHandfluorescencepropertieswassuccessfullypreparedandcharacterized、析thdifferenttechniquesThemainresultsobtain

5、edareasfollows：1EffectsofBisontheP(NIPAMCOAAc)microgelnanoparticlesformwasinvestigatedsystematicallyThen，mierogelnanoparticleswerepreparedunderoptimumconditionsThepHandtemperaturesensitivityofthemicrogclswerecharacterize

6、dbythetransmittanceofmicrogclsuspensionsasfunctionoftemperatureandpHThelowcriticalsolutiontemperature(LCST)ofmicrogelsolutionwasinfluencedbythecontentofAAcinmicrogelpolymersignificantlyLCSTofmicrogelincreasedwiththeconte

7、ntofAAcofhydrophilicpropertiesincreasingHoweverafterincorporationAAcinthePNIPAM，theP(NIPAMC0AAc)microgelbecamepHsensitivieInadditionwithAAcamountinthecopolymerincreasing，suchpHsensitivityenhanced2Theresearchinterestofthi

8、sthesisisconcentratedontemperatureresponsive，pHandfluorescencepropertiesofrareearthions(Terbium，Europium)andP(NIPAMCO—AAc)，andtheresearchworkwerecarriedoutbyscanningelectronmicroscopy(SEM)，transmissionelectronmicroscopy(

9、TEM)，Zeat，ultravioletvisual(UVvis)absorptionspectroscopyfouriertransforminfraredspectroscopy(FTIR0andfluorescencespectroscopyItWasfoundfromtheexperimentalresultsthatthereexitsaenergytransfersbetweenthepolymerligandandthe

10、Tb(III)，itCanenhancefluorescenceemissionoftheTb(III)，theintramolecularenergytransferefficiencyfromP(NIPAM—CO—AAc)toTb(III)reached40％thecomplexshowsthermoresponsive，pHresponsiveproperties；Thereexitsaenergytransfersbetween

11、thepolymerligandandtheEu(III)，itCallenhancefluorescenceemissionofthepolymerligandandEu(III)atthesametimeTheLCSTofP(NIPAMCO—AAc)containingEu(III)haschangedlittleaftertheformationofthecomplexofP(NIPAM—CO—AAc)Eu(III)Keyword