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Effect of Hydrolyzing Agents on the Properties of Poly (Ethylene Glycol)-Fe3O4 Nanocomposie
KTH, School of Information and Communication Technology (ICT), Material Physics, Functional Materials, FNM.ORCID iD: 0000-0001-5678-5298
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2011 (English)In: Nano-Micro Letters, ISSN 2150-5551, Vol. 3, no 2, 79-85 p.Article in journal (Refereed) Published
Abstract [en]

Poly (ethylene glycol) (PEG) assisted hydrothermal route has been used to study the influence of the hydrolyzing agent on the properties of PEG-iron oxide (Fe3O4) nanocomposites. Iron oxide nanoparticles (NPs), as confirmed by X-ray diffraction analysis, have been synthesized by a hydrothermal method in which NaOH and NH3 were used as hydrolyzing agents. Formation of PEG-Fe3O4 nanocomposite was confirmed by Fourier transform infrared spectroscopy (FTIR). Samples exhibit different crystallite sizes, which estimated based on line profile fitting as 10 nm for NH3 and 8 nm for NaOH hydrolyzed samples. The average particle sizes obtained from transmission electron microscopy was respectively 174 +/- 3 nm for NaOH and 165 +/- 4 nm for NH3 gas hydrolyzed samples. Magnetic characterization results reveal superparamagnetic characteristics despite a large particle size, which indicate the absence of coupling between the nanocrystals due to the presence of polymer in the nanocomposites. The conductivity curve demonstrates that sigma(DC) is strongly temperature dependent.

Place, publisher, year, edition, pages
2011. Vol. 3, no 2, 79-85 p.
Keyword [en]
Magnetite, PEG, Hydrothermal synthesis, Conductivity, Magnetization
National Category
Nano Technology
URN: urn:nbn:se:kth:diva-120927DOI: 10.3786/nml.v3i2.p79-85ISI: 000307056800002ScopusID: 2-s2.0-84355164120OAI: diva2:616907

QC 20130419

Available from: 2013-04-19 Created: 2013-04-16 Last updated: 2013-04-19Bibliographically approved

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Toprak, Muhammet
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