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1、MicroscopicStudiesofPolyaniline-PNIPAAm//AluminaCompositesBull.KoreanChem.Soc.2008,Vol.29,No.91699MicroscopicStudiesofPolyaniline-poly-N-isopropylacrylamide/AluminaCompositesContainingDodecylbenzeneSulfonicAcid†*C.Basavaraja,R.Pierson,Ju-HwangKim,andDoSungHuhDepartmentofChemis
2、tryandInstituteofFunctionalMaterials,InjeUniversity,Kimhae,Kyungnam621-749,Korea*E-mail:chemhds@inje.ac.kr†DivisionofAdvancedTechnology,KoreaResearchInstituteofStandardsandScience,Yuseong,Daejeon303-340,KoreaReceivedJune6,2008Thepolyaniline(PANI)compositescontainingpoly(N-isop
3、ropylacrylamide-co-acrylicacid/alumina)(PNA/Al2O3))weresynthesizedbychemicalpolymerizationofanilineinanaqueoussolutioncontainingdispersedPNA/Al2O3inthepresenceofdodecylbenzenesulfonicacid(DBSA).Thetopographyofobtainedcompositeswasinvestigatedwithscanningelectronmicroscopy(SEM)
4、andatomicforcemicroscopy(AFM).Thermalstabilitywasreassertedbythermogravimetric(TGA)anddifferentialscanningcalorimetry(DSC).AcorrelationinthesurfacemodificationofthecompositebetweenAl2O3andPANI-PNAhasbeendiscussed.KeyWords:Conductingpolymer,Polymercomposite,Polyaniline,Polyanil
5、ine-poly-N-isopropylacrylamide-co-acrylicacid/alumina(PANI-PNA/Al2O3)Introductionpropylacrylamide)(PNIPAm)werefoundtoexhibitout-standingcapabilitiesaspotentialcarriersandprotectiveAmongtheconductivepolymers,polyaniline(PANI)containersforbiologicallyactivemolecules.Thesemicro-o
6、ccupiesaplaceofspecialinterest.PANIhasmanyadvant-gelspossessseveraladvantagesoverbulkgelsinthepointofages:relativelycheap,easytosynthesize,environmentalsmallsizeandvolume,highsurfacearea,fasterresponsetostability,andcontrollableconductivity,sothePANIisstimuli,andhighdiffusivit
7、ybecausetheirsizerangestypi-regardedasthemostpromisingconductingpolymermaterialcallyfrom50nmto5μm.Untilnow,manypapersonphy-1forcommercialapplication.However,PANIexhibitslowersico-chemicalpropertiesofPNIPAmmicrogelitselfhave21,22thermalstability,processibility,andelectricproper
8、tiesinbeenpublished.However,thestudiesonthepreparationcompari
