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Title:SINTEZA IN LASTNOSTI MAGNETNIH TEKOČIN NA OSNOVI MAGHEMITA (γ - Fe2O3) OBLEČENEGA Z CM - DEKSTRANOM
Authors:Prša, Timea (Author)
Ban, Irena (Mentor) More about this mentor... New window
Drofenik, Miha (Co-mentor)
Files:.pdf UNI_Prsa_Timea_2009.pdf (8,05 MB)
 
Language:Slovenian
Work type:Undergraduate thesis (m5)
Organization:FNM - Faculty of Natural Sciences and Mathematics
Abstract:Namen diplomske naloge je bil sinteza magnetne tekočine na osnovi maghemita (γ - Fe2O3) oblečenega z natrijevo soljo dekstrana (CM–dekstrana) dispergiranega v nosilni tekočini vodi. V diplomskem delu navajamo dva načina priprave zgoraj navedene magnetne tekočine. Na podlagi rezultatov analize z rentgensko praškovno difrakcijo (XRD) smo izbrali sintezni postopek, pri katerem smo ugotavljali vpliv količine prevleke na velikost oblečenih maghemitnih delcev ter določili njeno optimalno količino, pri kateri je magnetna tekočina še stabilna. Delce smo karakterizirali z rentgensko praškovno difrakcijo (XRD), s termogravimetrično analizo (TGA) s transmisijskim elektronskim mikroskopom (TEM) in fourierjevo transformacijsko infrardečo spektroskopijo (FTIR).
Keywords:Magnetna tekočina, maghemit (γ-Fe2O3), natrijeva sol dekstrana (CM – dekstran), rentgenska praškovna difrakcija (XRD), termogravimetrična analiza (TGA), transmisijski elektronski mikroskop (TEM), fourierjeva transformacijska infrardeča spektroskopija (FTIR).
Year of publishing:2009
Publisher:[T. Prša]
Source:Maribor
UDC:54(043.2)
COBISS_ID:16827144 Link is opened in a new window
NUK URN:URN:SI:UM:DK:QRPM6NTN
Views:4072
Downloads:696
Metadata:XML RDF-CHPDL DC-XML DC-RDF
Categories:FNM
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Secondary language

Language:English
Title:SYNTHESIS AND PROPERTIES OF MAGNETIC FLUIDS BASED ON CM - DEXTRAN COATED MAGHEMITE (γ - Fe2O3)
Abstract:We have prepared magnetic fluids of carboxymethyl dextran (CM - dextran) coated maghemite (γ-Fe2O3) nanoparticles dispersed in water. In this experimental work we used two methods of synthesis. We used one of these methods to find out the influence of coating on the magnetic properties of maghemite particles. We have determined the optimal mass of CM–dextran, wich gives the stable magnetic fluid. The nanoparticles were characterized by X-ray diffraction (XRD), thermogravimetric analysis (TGA), transmission elektron microscopy (TEM) and fourier transform infrared spectroscopy (FTIR).
Keywords:Magnetic fluid, maghemite (γ - Fe2O3), carboxymethyl dextran(CM – dextran), X - ray diffraction (XRD), thermogravimetric analysis (TGA), transmission elektron microscopy (TEM), fourier transform infrared spectroscopy (FTIR).


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