Structural analysis of aqueous ferrofluids with cobalt ferrite particles stabilized with lauric acid and sodium n-dodecyl sulphate

3rd International Conference on Small Angle Neutron Scattering dedicated to the 80 anniversary of Yu.M. Ostanevich

Balasoiu-Gaina, A.-M.^1,2,3 ; Balasoiu, M.^1,4 ; Ivankov, O.^1,5,6 ; Soloviov, D.^1,5,6 ; Lysenko, S.^7 ; Stan, C.^8 ; Lupu, N.^9 ; Creanga, D.^10 ; Kuklin, A.^1,5

Joint Institute for Nuclear Research, Dubna, Russia^1

CMCF, Moscow State University, Moscow, Russia^2

West University of Timisoara, Timisoara, Romania^3

Horia Hulubei National Institute of Physics and Engineering, Bucharest, Romania^4

Moscow Technical Physics Institute, Dolgoprudnyi, Russia^5

Institute for Safety Problems of Nuclear Power Plants of the Ukrainian NAS, Kyiv, Ukraine^6

Institute of Technical Chemistry, Ural Branch of RAS, Perm, Russia^7

Politehnica University of Bucharest, Faculty of Applied Sciences, Romania^8

National Institute of Research, Development for Technical Physics, Iasi, Romania

(10) Alexandru Ioan Cuza University, Iasi, Romania^9

关键词: Aqueous ferrofluids;    Cobalt ferrite particles;    Concentration effects;    Dodecyl sulphate;    Particle volume concentrations;    Structure factors;    Structure variation;    Zero concentration;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/848/1/012026/pdf
DOI  :  10.1088/1742-6596/848/1/012026

来源: IOP

【 摘 要 】

Small angle neutron scattering (SANS) experiment on CoFe2O4/lauric acid/sodium dodecyl sulphate/H2O ferrofluid was performed at the time-of-flight YuMO spectrometer. Concentration effects on the structure variation of the investigated ferrofluid are presented. Using the zero concentration approximation, the structure factors of samples with different concentration were determined. It was shown that the structure factor of values higher than 1 is present in samples with particle volume concentration equal and greater than 0.5%.