NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2015, 6 (5), P. 726-732
Stabilization of water-in-oil emulsions with complex of silica particles and hexylamine
A.V. Nushtaeva – Penza State University of Architecture and Construction, Physics and Chemistry, Penza, Russia; nushtaeva.alla@yandex.ru
The properties of emulsions stabilized by complexes of silica particles with hexylamine are analyzed. It is shown that water-in-oil emulsions were obtained only if the hexylamine volume fraction was greater than that of the silica (Aerosil) volume fraction in the aqueous phase. So, in the case of water-in-oil emulsions, hexylamine is a completely equivalent co-stabilizer together with silica, rather than just a solid surface modifier. It is assumed that at high concentrations this short-chain surfactant, together with silica, forms hybrid organic-inorganic particles that are attached at the oil/water interface and promotes the formation of oil droplets in the water.
Keywords: solid particles, solid-stabilized emulsions, oil-in-water emulsions, hybrid particle.
PACS 82.70.Kj, 68.05.-n, 68.08.-p
DOI 10.17586/2220-8054-2015-6-5-726-732