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1、CurrentAppliedPhysics13(2013)1231e1236ContentslistsavailableatSciVerseScienceDirectCurrentAppliedPhysicsjournalhomepage:www.elsevier.com/locate/capPreparationofPS/TiO2asawhitepigmentforelectrophoreticdisplaysaaab,**a,*KyungJuPark,KangUkLee,MyeongHoKi
2、m,OhJoongKwon,JaeJeongKimaSchoolofChemicalandBiologicalEngineering,InstituteofChemicalProcess,SeoulNationalUniversity,599Gwanangno,Gwanak-gu,Seoul151-744,RepublicofKoreabDepartmentofEnergyandChemicalEngineering,UniversityofIncheon,12-1Songdo-dong,Yeo
3、nsu-gu,Incheon406-772,RepublicofKoreaarticleinfoabstractArticlehistory:PS(polystyrene)/TiO2,TiO2coatedontoPSbyahydrolysisreaction,waspreparedasawhitepigmentforReceived5February2013electronicpaper(e-paper).Twokeyparameters,densityandzetapotential,were
4、preciselycontrolledforReceivedinrevisedformuseasawhitepigment.ThedensitywasmanipulatedbychangingthemixtureratioofEtOHtoH2O,and19March2013theconcentrationoftitaniumtetrabutoxide(TBO)inthehydrolysisreaction.Themodi?cationofPS/TiO2Accepted20March2013wit
5、h(3-aminopropyl)triethoxysilane(APTES)andaceticacidshowedpositivezetapotentialoriginatedAvailableonline6April2013fromthemutualeffectsbetweenanaminofunctionalgroupinAPTES,andaprotonfromaceticacid.Themutualeffectwasstudied,andPS/TiOwithdensityof1.6g/cm
6、2andzetapotentialof75mVwasKeywords:2preparedusingtheresults.WhitepigmentSurfacemodi?cationó2013ElsevierB.V.Allrightsreserved.ZetapotentialElectronicpaper1.IntroductionLong-termstabilitycanbeobtainedbyadjustingthedensityofapigmenttothatofthedielectric
7、liquid,orbyintroducingastabi-Electronicpaper(e-paper),proposedbyB.Comiskeyinthelizingagentthatcausessterichindranceamongtheparticles[4,5].1970s[1],hasarisenasapromisingcandidateforpaper-likedis-Theenhancedstabilityofsuspensionallowsimagestobemain-pla
8、ys.Ithasremarkableadvantagescomparedtoconventionaltained,evenintheoff-state.Inordertoobtaingoodopticalchar-displays,suchasportability,highbrightness,highcontrastratio,acteristicsofthepigment,whichisrepresentedbyahighcontrastlong-termstabilityandlowpo