模板法制備長程有序?qū)訝盍u基磷灰石及其海藻酸鹽基復(fù)合微球的研究.pdf

1、翁滅洋大薯博士學(xué)位論文■■咖III一一________一一級學(xué)科：材料科學(xué)與工程學(xué)科專業(yè)：材料學(xué)作者姓名：劉超指導(dǎo)教師：成國祥教授IrzⅡ☆∈№2004年6月ABg丌認(rèn)(叮ABSTRACTMaterialswithlongrangeorderedmesostructureswerefabricatedviatemplatestechnologybasedonmolecularselforganizationInthisprocess，h

2、ydrogenbond，VanderWaalsbondandothernoncovalentbondscooperatedasawhole，bywhichoneormoreunitsmagnifiedthemselvestoformaggregateshavingsteadystructure，thentheseaggregatesasstructuralunitsweremulti—duplicated，whichmadethesys

3、tem’Sorganizationevolvetohigherlevels，finallythesystemwithnanostructureWasformedTemplatesmethodisaneffectiveandcheapwaytobuildthenanostructure’Templatesmethodwereintroducedintothesynthesisofhydroxyapatite(HAPCal0(P04)6(O

4、H)2)，whichexhibitsstrongaffinitytohosttissue，toformhierarchystructureCalciumhydroxyapatitewithlongrangeorderedlamellarnanostructureandwellcrystallizedlattice，notedwithL=H觥Wasfabricatedviasodi啪dodecylsulfonate(SDS，C12H25S

5、03Na)astemplatesinethanolwatersolventmlongrangeorderedlamellarnanostructurewascharacterizedbyXraydiffraction(XRD)inthesmallangles(20=115。1andHAPphasein9600Thelongrangeorderedlamellarnanostructureandtheorientationofthegro

6、wthofcrystalwereobservedbyHighResolutionTransmissionElectronMicroscopy(HRTEM)BasedonthesethemodelofthishierarchystructBrewasgivenFollowed，thehydroxyapatiteWascharacterizedbythermogravimetry(TGA)，F(xiàn)ouriertransforminfrareds

7、pectroscopy(FTIR)andN2adsorptionanddesorptionisothermsTheresultshowedthattheperiodicityofthelamellarstructureWasabout3nmThecrystalgrewalongthecrystalfaces(100)and(002)inthe厶phases。butthegrowthofperpendicularfacewasrestri

8、ctedbythetemplatesTemplatecontentNaOHcontentconcentrationofmaterials，phosphatesresource，ripingtimeandagingtimehaveinfluence011theformationoflongrangeorderedlamellarnanostluctureThevolumeratioofethanolandwateriS1：lto1：2Ca