title: One-step inversion process to a Janus emulsion with two mutually insoluble oils.
abstract: High internal phase ratio (HIPR) aqueous Janus emulsions of two immiscible oils, silicone oil (SO) and a vegetable oil (VO), were prepared using a vibration mixer. The simple HIPR Janus emulsions, (VO + SO)/W, were found at weight fractions of the aqueous phase in excess of 0.3, while at a corresponding fraction of 0.1, a triple emulsion was obtained with the Janus emulsion forming a drop inside the vegetable oil to give a double Janus emulsion, (VO + SO)/W/VO, which in turn formed drops in the silicone oil resulting in a triple Janus emulsion (VO + SO)/W/VO/SO. Increasing the aqueous-phase fraction from 0.1 to 0.3 consequently meant an inversion, of which one intermediate stage was observed: a more complex configuration, e.g., one in which large SO drops with highly distorted VO drops attached were dispersed in a regular aqueous emulsion with spherical Janus (VO + SO) drops. A preliminary investigation was made into the destabilization process of the triple emulsions.
authors.affiliation: Ashland Consumer Markets, Lexington, Kentucky, United States.
authors.forename: Hida
authors.initials: H
authors.lastname: Hasinovic
authors.forename: Stig E
authors.initials: SE
authors.lastname: Friberg
mesh_terms: D004655:Emulsions; D010938:Plant Oils / Q000737:chemistry*; D012827:Silicone Oils / Q000737:chemistry*; D012995:Solubility; D013997:Time Factors; D014867:Water / Q000737:chemistry
chemical_list: D004655:Emulsions; D010938:Plant Oils; D012827:Silicone Oils; D014867:Water