Neutron studies of the structure of non-polar magnetic fluids with surfactant excess

L. A. Bulavin, A. V. Nagornyi, V. I. Petrenko, M. V. Avdeev, L. Almásy, L. Rosta, V. L. Aksenov

Research output: Article

5 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)1143-1148
Number of pages6
JournalUkrainian Journal of Physics
Volume58
Issue number12
DOIs
Publication statusPublished - 2013

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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