0372-400Х (Edition in Ukrainian)
2071-0186 (Edition in English)
2071-0194 (in electronic form)
Abbreviated key title: Ukr. J. Phys.
Bulavin L.A.1, Nagornyi A.V.1,2, Petrenko V.I.1,2, Avdeev M.V.2, Almasy L.3, Rosta L.3, Aksenov V.L.4,2
1 Taras Shevchenko National University of Kyiv, Faculty of Physics
(2, Prosp. Academician Glushkov, Kyiv 03022, Ukraine)
2 Joint Institute for Nuclear Research
(6, Joliot-Curie Str., Dubna 141980, Russia; e-mail: email@example.com)
3 Institute for Solid State Physics and Optics, Wigner Research Centre for Physics,
Hungarian Academy of Sciences
(29-33, Konkoly Thege Miklys ?ut., Budapest H-1525, Hungary)
4 B.P. Konstantinov Petersburg Nuclear Physics Institute
(Orlova Roscha, Gatchina 188300, Leningrad district, Russia)
Neutron Studies of the Structure of Non-Polar Magnetic Fluids with Surfactant Excess
Section: Soft matter
Original Author's Text: Ukrainian
Abstract: Non-polar magnetic fluid systems with an excess of surfactants have been studied with the use of the small-angle neutron scattering technique. Two types of highly stable ferrofluids, magnetite/oleic acid/decalin and magnetite/myristic acid/decalin, with a low (of about 1 vol.%) magnetite content and various acid fractions (up to 25 vol.%) are examined. The aggregation of magnetic particles and surfactant molecules is shown not to occur in the indicated concentration range of the acid molecule excess. The experimental results testify to a change of the interaction between the molecules of oleic and myristic acids in the free (non-adsorbed) state, when they are dissolved in magnetic fluids, and in their solutions in decalin without magnetic particles.
Key words: magnetic fluids, ferrofluids, small-angle neutron scattering, decalin.