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Structural characterization of concentrated aqueous ferrofluidsстатья
- Авторы: Nagornyi A.V., Socoliuc V., Petrenko V.I., Almasy L., Ivankov O.I., Avdeev M.V., Bulavin L.A., Vekas L.
- Журнал: Journal of Magnetism and Magnetic Materials
- Том: 501
- Год издания: 2020
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Номер статьи: 166445
- DOI: 10.1016/j.jmmm.2020.166445
- Аннотация: Structure characterizations of concentrated water-based magnetic fluids stabilized by oleic and lauric acids were done by means of small-angle neutron scattering (SANS) and complemented by dynamic light scattering and magnetization analysis. Stability of ferrofluids with time against sedimentation was concluded despite the presence of aggregates in solutions. Differences in the average sizes of individual polydisperse magnetite nanoparticles coated with surfactants and their aggregates were revealed. Structural parameters obtained from SANS have been confirmed by magnetogranulometry data. The comparative analysis of the aggregation and its change upon dilution is made basing on the data of SANS and dynamic light scattering techniques.
- Добавил в систему: Авдеев Михаил Васильевич