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应用表面与胶体化学教育部重点实验室KeyLaboratoryofAppliedChemistry&ColloidChemistry,MOECore–shellpolymers:areviewRSCAdv.,2013,3,15543-15565Reporter:RuiNiuJianwuGuoXiaoboTeng2013.11.20应用表面与胶体化学教育部重点实验室KeyLaboratoryofAppliedChemistry&ColloidChemistry,MOEContent1.Introduction2.Classifications3.Preparationofcore-shell4.DevelopmentoflatexparticlemorphologyofCPS5.Characterizations6.Recentstudyoncore-shellpolymers7.Applications8.conclusion应用表面与胶体化学教育部重点实验室KeyLaboratoryofAppliedChemistry&ColloidChemistry,MOE1.IntroductionIn1961,HughesandBrowninvestigatedthephysicalpropertiesofcore–shellpolymer(CSP)andtheirinterestingmorphology.Thisclassofmaterialhasattractedmuchattentionbecauseofthecombinationofsuperiorpropertiesnotpossessedbytheindividualcomponents.Thesystemsmightcombinethecharacteristicsandpropertiesofbothshellandcorewherethesurfacepropertiesoftheshellaretranslatedtothecore,impartingnewfunctionalitytotheCSP.Macromolecules,2003,36(6),1988–1993.CSPsarestructuredcompositeparticlesconsistingofatleasttwodifferentcomponents,oneinprincipleformsthecoreandanotherformstheshelloftheparticles.应用表面与胶体化学教育部重点实验室KeyLaboratoryofAppliedChemistry&ColloidChemistry,MOE2.ClassificationCoreshellpolymers(CSPs)StateHydrogelsNIPAMNon-NIPAMConventionalmonomerAcrylamidederivativesSizeNanoMicroNon-HydrogelsNon-aqueousOrganic-inorganicSingle应用表面与胶体化学教育部重点实验室KeyLaboratoryofAppliedChemistry&ColloidChemistry,MOE2.1Core–shellpolymerhydrogelsahydrogelshellsurroundinganon-hydrogelcoreHydrogelinbothcoreandshellcomponentsCore–shellpolymerhydrogelsProperty:CSPhydrogelshavebeenproducedeithertomodifythestabilityandphysicalpropertiesofthepolymersortoimpartstimuli-responsivepropertiestoresponsiveparticles.Application:CSPhydrogelsmadeofsmartmaterialshavewidespreadapplications,especiallyinbiomedicalareas,astheirresponsetosurroundingenvironmentalchangessuchastemperatureandpH,etc.Adv.DrugDeliveryRev.,1996,18(2),219–267.Macromolecules,1998,31(25),8912–8917.应用表面与胶体化学教育部重点实验室KeyLaboratoryofAppliedChemistry&ColloidChemistry,MOE2.1.1NIPAMbasedCSPhydrogels32℃‘switchable’or‘smart’materials,poly(N-isopropylacrylamidePNIPAM)hasbeenextensivelyusedasamaincomponentinCSPhydrogelsduetoitsthermoresponsiveproperties.Macromolecules,1998,31(25),8912–8917Langmuir,2004,20(11),4330–4335J.ColloidInterfaceSci.,2012,376(1),97–106.应用表面与胶体化学教育部重点实验室KeyLaboratoryofAppliedChemistry&ColloidChemistry,MOE2.1.2Non-NIPAMCSPhydrogelⅠnon-NIPAMCSPs(conventionalmonomer)hydrophilicAAmhydrophilicAAchydrophobicMMAhydrophobicSt.produceresponsiveCSPsⅡnon-NIPAMCSPs(acrylamidederivatives)NIPMAMNNPAMN-ethylacrylamideN-vinylisobutylacrylamideusedtopolymerizetemperature-sensitivemicrogels应用表面与胶体化学教育部重点实验室KeyLaboratoryofAppliedChemistry&ColloidChemistry,MOE2.2Non-hydrogelcore–shellpolymerNonHydrogelsNon-aqueousOrganic-inorganicSingleCore:solidpolymerparticleorrubberShell:hardpolymerUsed:paints,coatingapplications,pigments,binderUsed：nanotechnologyandbiomedicalapplications,suchasasignal-moleculartemplate,live-cellimaging,drugcarrieranddrugrelease.Def:non-crosslinkedCSPsconsistingofamphiphilicblockorgraftpolymersinwhichhydrophobicandhydrophilicsegmentsarecovalentlyconnectedwiththedendriticorhyperbranchedcore-shell.在下面介绍应用表面与胶体化学教育部重点实验室KeyLaboratoryofAppliedChemistry&ColloidChemistry,MOEJ.Am.Chem.Soc.,2010,132(35),12218–12221synthesisofnewfunctionalmaterialsforlight-emittingdevices,solarcells,photodetectors,biomedicalandsensorapplications.Coresurfactantpoly(ethyleneoxide)poly(vinylbenzylchloride)poly(vinylpyrrolidone)polymerdifferentcopolymerspoly(styreneacrylicacid)ShellmetalsmetaloxidesmetalchalcogenidessilicaAdv.Mater.,2009,21(5),509–534.J.Mater.Chem.,2012,22(22),11370–11378.UsedInorganic–organicCSPsbutadienestyrene应用表面与胶体化学教育部重点实验室KeyLaboratoryofAppliedChemistry&ColloidChemistry,MOE3.Preparationofcore–shellpolymersCSPsaretypicallypreparedbyaseriesofconsecutive,emulsion,,dispersionorprecipitationpolymerizationsequenceswithdifferentmonomertype.CSPparticlesmulti-stepOne-stagereaction:afacilemethodtopreparepolymerparticleswithcore–shellmorphology.seedparticlesasacorematerialsecondorthirdstagemonomerispolymerizedintheseedlatexparticlesDisadvantage:expensive,timeconsumingChim.Acta,2003,496(1–2),53–63.Macromolecules,2009,42(13),4511–4519.①consecutiveemulsion应用表面与胶体化学教育部重点实验室KeyLaboratoryofAppliedChemistry&ColloidChemistry,MOEDispersionpolymerization：aclassoflargerparticlesandirregularshapeofpolymerparticleswereproducedinprecipitationpolymerization.polymerparticlesintherangeof1–15μm.Theformedpolymersareinsolubleincontinuousphase.②Basedonploymerizationclassesemulsionpolymerization:themainprocessforthepreparationofcommercialemulsion,whichinvolvesamonomerthathaslimitedsolubilityinwater.particlediameteristypicallywithintherangeof1–10μm.Macromolecules,2009,42(13),4511–4519PartA:Polym.Chem.,2001,39(19),3434–3442应用表面与胶体化学教育部重点实验室KeyLaboratoryofAppliedChemistry&ColloidChemistry,MOE③ExampleFig.3illustratescommonmethodstoprepareCSPsdescribedbyLiandStover.emulsionpolymerizationusingreactivesurfactantsTwo-stageemulsionpolymerizatio