Experimental study of the rheological properties and stability of highly-concentrated oil-based emulsions : научное издание

Описание

Тип публикации: статья из журнала

Год издания: 2022

Идентификатор DOI: 10.1016/j.molliq.2021.118125

Ключевые слова: nanoemulsion, viscosity, rheology, droplets size, ultrasonic treatment, stability

Аннотация: This study presents a systematic investigation of viscosity and rheological properties of several dozen emulsions and nanoemulsions. The concentration by volume of the oil in emulsions varied from 20% to 80%. Low-viscosity mineral oils were used for emulsion formation and an aqueous solution of calcium chloride was used as the secoПоказать полностьюnd medium. The volumetric concentration of emulsifiers varied from 1.5% to 4.5%. Three types of mineral oil, as well as various emulsifiers, are considered. The effect of the volumetric content and base oil type, the emulsifier type and concentration and the ultrasonic treatment duration on colloidal stability, rheological properties and droplet size of the resulting emulsion has been studied. It is shown that emulsions are considered to be non-Newtonian fluids with apparent elastic properties at oil concentration less than 35 vol%. All other things being equal, the average droplet size in the emulsion increases with an increase in the base oil viscosity. The use of ultrasonic treatment makes it possible to reduce the average droplet size in the emulsion by 4.5 times and to reduce its viscosity by 1.5 times. (C) 2021 Elsevier B.V. All rights reserved.

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Издание

Журнал: JOURNAL OF MOLECULAR LIQUIDS

Выпуск журнала: Vol. 349

Номера страниц: 118125

ISSN журнала: 01677322

Место издания: AMSTERDAM

Издатель: ELSEVIER

Авторы

  • Minakov A.V. (Siberian Fed Univ, 79 Svobodny Prospect, Krasnoyarsk 660041, Russia; SB RAS, Kutateladze Inst Thermophys, 1 Acad Lavrentyeva Prospect, Novosibirsk 630090, Russia)
  • Mikhienkova E.I. (Siberian Fed Univ, 79 Svobodny Prospect, Krasnoyarsk 660041, Russia)
  • Pryazhnikov M.I. (Siberian Fed Univ, 79 Svobodny Prospect, Krasnoyarsk 660041, Russia; SB RAS, Kutateladze Inst Thermophys, 1 Acad Lavrentyeva Prospect, Novosibirsk 630090, Russia)
  • Voronenkova Y.O. (Siberian Fed Univ, 79 Svobodny Prospect, Krasnoyarsk 660041, Russia)
  • Skorobogatova A.D. (Siberian Fed Univ, 79 Svobodny Prospect, Krasnoyarsk 660041, Russia)

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