Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/3005
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dc.contributor.advisorÇiftçioğlu, Muhsinen
dc.contributor.authorÇağlar Duvarcı, Özlem-
dc.date.accessioned2014-07-22T13:48:45Z-
dc.date.available2014-07-22T13:48:45Z-
dc.date.issued2009en
dc.identifier.urihttp://hdl.handle.net/11147/3005-
dc.descriptionThesis (Doctoral)--Izmir Institute of Technology, Chemical Engineering, Izmir, 2009en
dc.descriptionIncludes bibliographical references (leaves: 160-164)en
dc.descriptionText in English; Abstract: Turkish and Englishen
dc.descriptionxviii, 245 leavesen
dc.description.abstractSeveral rheometric techniques were applied to submicron and nano ceramic powder dispersions systematically in this study. The rheological behavior of the dispersions was determined by steady shear and dynamic shear rheology. Dynamic shear rheological techniques are scarcely used for the characterization of ceramic powder dispersions contrary to polymers.The flow behaviors of the submicron and nano dispersions were found to be dependent on the solids content and fructose concentration. The submicron alumina, nano alumina, and nano titania dispersions in fructose solution showed shear thinning behavior and were fitted to the Herschel-Bulkley model.The dynamic shear rheology measurements showed that the solid part of the dispersions was dominant over the liquid part for both submicron and nano powder dispersions. The elastic modulus was higher than the viscous modulus in stress and frequency sweep measurements. The elastic moduli of the dispersions with solids content lower than 40 vol% were dependent on the angular frequency which indicated a gel-like behavior. However, the elastic moduli of the dispersions with 40 vol% solids were independent of angular frequency which indicated a solid like behavior. Further increase in fructose content had significant effects on both steady shear and dynamic shear rheological behavior of the dispersions regardless of particle size. The submicron and nano ceramic powder dispersions can be prepared by using fructose for the regulation of the rheological behavior of ceramic powder dispersions. The characterization of powder surfaces is essential for the effective adsorption of fructose.en
dc.language.isoenen_US
dc.publisherIzmir Institute of Technologyen
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subject.lccTP156.R45 .D98 2009en
dc.subject.lcshRheologyen
dc.subject.lcshCeramic powdersen
dc.subject.lcshNanocrystalsen
dc.subject.lcshDispersionen
dc.titleRheological behavior of nanocrystalline / submicron ceramic powder dispersionsen_US
dc.typeDoctoral Thesisen_US
dc.departmentThesis (Doctoral)--İzmir Institute of Technology, Chemical Engineeringen_US
dc.relation.publicationcategoryTezen_US
item.openairetypeDoctoral Thesis-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
item.languageiso639-1en-
item.cerifentitytypePublications-
item.grantfulltextopen-
crisitem.author.dept03.02. Department of Chemical Engineering-
Appears in Collections:Phd Degree / Doktora
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