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(xué)碩士學(xué)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(qǐng)學(xué)位級(jí)別：碩士專業(yè)：材料學(xué)指導(dǎo)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