Controlled Growth of Monodisperse Silica Spheres 英文文献资料

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1、JOURNALOFCOLLOIDANDINTERFACESCIENCE26,62--69(1968)ControlledGrowthofMonodisperseSilicaSpheresintheMicronSizeRange1WERNERSTOBER,ARTHURFINKDepartmentofRadiationBiologyandBiophysics,MedicalSchool,UniversityofRochester,NewYork14620A~DERNSTBOHN,Max-Planck-Institutfi~rexperimentelleMedizi

2、n,GOttingen,GermanyReceivedAugust3,1967Asystemofchemicalreactionshasbeendevelopedwhichpermitsthecontrolledgrowthofsphericalsilicaparticlesofuniformsizebymeansofhydrolysisofalkylsilicatesandsubsequentcondensationofsilicieacidinalcoholicsolutions.Ammoniaisusedasamorphologicalcatalyst.

3、Particlesizesobtainedinsuspensionrangefromlessthan0.05t,to2~indiameter.Inmanyexperimentalstudieswhichin-andhavebeendescribedintheliteraturevolvetheuseofcolloidalsuspensionsof(2).However,nosuccessfulattempthasmatterinformofhydrosolsandaerosols,itbeenmadetogeneratemonodispersesuspen-w

4、ouldbedesirabletohavethesuspendedsionsofsilicaparticles.Acommercialformphaseconsistingofhomogeneousparticlesofofhighlydispersesilicaproducedbycom-uniformshapeandsize.Suchmonodispersebustionofsilicontetraehlorideinahydrogenparticulatesuspensionsoffermanyexperi-torch(3)consistsofprima

5、rysilicaspheresofmentalandtheoreticaladvantages.Theysizesbelow0.1u,buttheyareaggregatedtonotonlyfacilitateeasycalibrationproce-coarseandirregularclusterswhichcauseaduresforanalyticalequipment,butalsoverypoorlydefinedstateofsuspension.simplifydatareduction,evaluationandin-Thefollowin

6、ginvestigationwasmadetoterpretationofexperimentsdesignedtoelu-explorethepossibilitiesofproducingmono-cidatephysicoehemiealpropertiesorphysi-dispersesuspensionsofsilicaspheresintheopathologicaleffectsofcolloidsandaerosols.colloidalsizerange.SuchmaterialcanbeTheresultswouldnolongerbeb

7、iasedbyusedinbothhydrosolandaerosolstudies.parametersofsizeandshapedistributions.Itwillbeofparticularinteresttoinvesti-Somemonodispersesuspensionsofparti-gatorsinthemedicalfieldbecauseofitsclesinthecolloidalsizerangeareavailableknowneytotoxicityandinhalationhazard.informofspheresofo

8、rganichighpolymersT