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1、Availableonlineatwww.sciencedirect.comCeramicsInternational37(2011)65–71www.elsevier.com/locate/ceramintSynthesisandcharacterizationofhydroxyapatite/b-tricalciumphosphatenanocompositesusingmicrowaveirradiationA.Farzadi*,M.Solati-Hashjin,F.Bakhshi,A.Aminia
2、nBiomaterialgroup,FacultyofBiomedicalEngineering,AmirkabirUniversityofTechnology(TehranPolytechnic),Tehran,15875-4413IranReceived29May2010;receivedinrevisedform7June2010;accepted18July2010Availableonline22August2010AbstractMicrowaveassistedsynthesismethod
3、isarelativelynewapproachemployedtodecreasesynthesistimeandformamorehomogenousstructureinbiphasiccalciumphosphatebioceramics.Inthisstudy,nanocrystallineHA/b-TCPcompositeswerepreparedbymicrowaveassistedsynthesismethodand,forcomparisonreason,byconventionalwe
4、tchemicalmethods.Thechemicalandphasecomposition,morphologyandparticlesizeofpowderswerecharacterizedbyFTIR,XRDandSEM,respectively.Theuseofmicrowaveirradiationresultedinimprovedcrystallinity.TheamountofhydroxyapatitephaseinBCPrangedfrom5%to17%.Theassessment
5、ofbioactivitywasdonebysoakingofpowdercompactsinsimulatedbodyfluid(SBF).ThedecreasingpHofthesolutioninthepresenceofb-TCPindicateditsbiodegradablebehavior.Rod-likehydroxyapatiteparticleswerenewlyformedduringthetreatmentinSBFformicrowaveassistedsubstratesynth
6、esis.Incontrast,globularparticlesprecipitateundersameconditionsifBCPsubstratesweresynthesizedusingconventionalwetchemicalmethods.#2010ElsevierLtdandTechnaGroupS.r.l.Allrightsreserved.Keywords:Microwaveprocessing;Hydroxyapatite;b-tricalciumphosphate;Chemic
7、alsynthesis1.IntroductionformulaofCa3(PO4)2withCa/Pratioof1.5,hasalsoahexagonalcrystalstructure[1].ThebiocompatibilityandBioceramicssuchasalumina,zircon,calciumphosphatessimilarityofcalciumphosphateslikehydroxyapatiteandandbioglasshavegreatimportanceinbio
8、logicalenvironments.tricalciumphosphatetothemineralcompositionofhumanResearchanddevelopmentonsuchbioceramicshavemadeboneandteethhavemadethemsuitableforsubstitutionofsignificantcontributionstothehealthandqualityofhuma
