diplomsko delo
Janja Stergar (Author), Irena Ban (Mentor), Mihael Drofenik (Co-mentor)

Abstract

Namen diplomskega dela je bil sintetizirati ustrezno magnetno tekočino za uporabo v magnetni hipertermiji na osnovi magnetita (Fe3O4), v obliki palčk, oblečenega s CM — dekstranom v vodi kot nosilni raztopini. S pomočjo rentgenske praškovne difrakcije (XRD) smo ocenili velikost nanodelcev magnetita in kvalitativno karakterizirali vzorce. Morfologijo nanodelcev smo preučevali s transmisijskim elektronskim mikroskopom (TEM). Fizikalne lastnosti vzorcev, ki so bili izpostavljeni kontroliranemu programu segrevanja, smo dobili s pomočjo termogravimetrične analize (TGA). Magnetne meritve so bile izvedene z DSM — 10 magnetometrom. Izvedli smo tudi kalorimetrične meritve za magnetne tekočine. Rezultati so pokazali, da čas sintetiziranja vpliva na obliko in velikost neoblečenih delcev in oblečenih delcev s CM — dekstranom. Daljši je čas sintetiziranja, večje in bolj kristalinične nanodelce dobimo. Morfologija nanodelcev posneta s pomočjo TEM, nam kaže paličasto obliko delcev. Magnetne meritve so pokazale ozko histerezno krivuljo s Hc= 31,6 A/m, Mmax= 92,1 Am2/kg in MR= 2,21 Am2/kg.

Keywords

magnetit;magnetna tekočina;rentgenska praškovna difrakcija;magnetne meritve;sproščena toplotna energija;transmisijska elektronska mikroskopija;termogravimetrična analiza;

Data

Language: Slovenian
Year of publishing:
Source: Maribor
Typology: 2.11 - Undergraduate Thesis
Organization: UM FKKT - Faculty of Chemistry and Chemical Engineering
Publisher: [J. Damiš]
UDC: 66.086.4(043.2)
COBISS: 13537046 Link will open in a new window
Views: 3467
Downloads: 396
Average score: 0 (0 votes)
Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: English
Secondary title: Synthesis and properties of magnetic fluids based on magnetite - Fe3 [sub] O4 [sub]
Secondary abstract: The purpose of this work was to synthesise the appropriate magnetic fluid for use in magnetic hyperthermia on the basis of magnetite (Fe3O4), in the form of rods, coated with CM - dextran in water as the carrier liquid. The size of magnetite nanoparticles was estimated by scherrer equation. Samples were characterized with XRD analysis. The morphology of nanoparticles was studied with transmission electron microscopy (TEM). Physical properties of the samples followed with controlled heating program, were measured with termogravimetric analysis (TGA). Magnetic measurements were carried out by DSM - 10 magnetometer. Calorimetric measurements were performed for the magnetic fluid also. The results showed that the synthesis time influenced the shape and size of uncoated particles and particles coated with CM - dextran. The longer the time of synthesis was, the larger and more crystalline nanoparticles were obtained. Morphology of nanoparticles recorded with the help of TEM showed rod - like particles. Magnetic measurements showed a narrow hysteresis curve with Hc= 31,6 A/m, Mmax= 92,1 Am2/kg and MR= 2,21 Am2/kg.
Secondary keywords: magnetite;magnetic fluid;X-ray diffraction;magnetic measurements;specific absorption rate;transmission electron microscopy;termogravimetric analysis;
URN: URN:SI:UM:
Type (COBISS): Undergraduate thesis
Thesis comment: Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo
Pages: XIII, 52 f.
Keywords (UDC): applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;chemical technology;chemical and related industries;kemijska tehnologija;kemijske in sorodne industrije;physical and physicochemical operations and equipment;physical and physicochemical effects on chemical processes;fizikalne in fizikalno-kemijske operacije ter oprema;fizikalni in fizikalno-kemijski vplivi na kemijske procese;
ID: 987445