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dc.contributor.advisorLombardo, Stephen J. (Stephen John)eng
dc.contributor.advisorYu, Qingsong, 1963-eng
dc.contributor.authorRitts, Andrew Charles, 1984-eng
dc.date.issued2010eng
dc.date.submitted2010 Summereng
dc.descriptionThe entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file.eng
dc.descriptionTitle from PDF of title page (University of Missouri--Columbia, viewed on November 1, 2011).eng
dc.descriptionThesis advisor: Dr. Stephen Lombardo, Dr. Hao Li, and Dr. Qingsong Yu.eng
dc.descriptionVita.eng
dc.descriptionPh. D. University of Missouri-Columbia 2010.eng
dc.description.abstract[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] SiC nanofibers in gram-scale per batch were synthesized by chemical vapor deposition. A systematic comparison of different sized graphite and multi-walled carbon nanotubes as carbon precursors of SiC nanofibers revealed Ni catalyst concentration significantly affected the quality of growth. The size of the carbon precursor affected the kinetics and diffusion, which effect the SiC nanofiber growth as observed in electron microscopy. Allylamine plasma surface treated MWNTs and SiC nanofibers enhanced dispersion and interfacial adhesion in an epoxy matrix. All composite samples without plasma treatment lowered in tensile strength, but after plasma treatment all samples increased the tensile strength by 40%. Nanomaterial settling and aggregation were observed with composites using untreated samples and was believed to negatively affect the mechanical properties. The increase in strength of plasma treated samples was attributed to enhanced dispersion and interfacial adhesion observed visually and by electron microscopy. A non-thermal argon plasma brush treatment increased the micro-tensile strength of dental composite restorations. FTIR observed an increase in carbonyl groups on the surface of plasma treated demineralized dentin. The increase in tensile strength was attributed to improved adhesive penetration into collagen fibrils and increased hydrogen bonding between dental adhesive and dental collageneng
dc.description.bibrefIncludes bibliographical references.eng
dc.format.extentxiv, 135 pageseng
dc.identifier.oclc872561952eng
dc.identifier.urihttps://doi.org/10.32469/10355/12184eng
dc.identifier.urihttps://hdl.handle.net/10355/12184
dc.languageEnglisheng
dc.publisherUniversity of Missouri--Columbiaeng
dc.relation.ispartofcollectionUniversity of Missouri--Columbia. Graduate School. Theses and Dissertationseng
dc.rightsAccess is limited to the campus of the University of Missouri-Columbia.eng
dc.subject.lcshFillings (Dentistry) -- Design and constructioneng
dc.subject.lcshDental adhesives -- Design and constructioneng
dc.subject.lcshNanofibers -- Design and constructioneng
dc.subject.lcshSilicon carbideeng
dc.subject.lcshNickel catalystseng
dc.subject.lcshChemical vapor depositioneng
dc.subject.lcshPlasma polymerizationeng
dc.subject.lcshNanotubeseng
dc.titleLarge-scale fabrication of SiC nanofibers and plasma interface engineering of polymer nanocomposites and dental composite restorationeng
dc.typeThesiseng
thesis.degree.disciplineChemical engineering (MU)eng
thesis.degree.grantorUniversity of Missouri--Columbiaeng
thesis.degree.levelDoctoraleng
thesis.degree.namePh. D.eng


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