A Three-Step Model for Submicron W/O Emulsion Formation in a Transitional-Phase Inversion Process

Xiaolong WangCollege of Mechanical and Electronic Engineering, China University of Petroleum, Qingdao, China;Dongying Science and Technology Bureau, Dongying, China

Yonghong LiuCollege of Mechanical and Electronic Engineering, China University of Petroleum, Qingdao, ChinaCorrespondence[email protected]

Hang DongCollege of Mechanical and Electronic Engineering, China University of Petroleum, Qingdao, China

Qiang SunCollege of Mechanical and Electronic Engineering, China University of Petroleum, Qingdao, China

Yang ShenCollege of Mechanical and Electronic Engineering, China University of Petroleum, Qingdao, China

Renjie JiCollege of Mechanical and Electronic Engineering, China University of Petroleum, Qingdao, China

Abstract

A three-step model of the transitional phase inversion (TPI) process for the formation of water-in-oil (W/O) emulsions is presented. Three types of emulsions exist in an emulsification process at different oil–water ratios and hydrophilic–lipophilic balance (HLB). A stable W/O emulsion was obtained using Sorbitan oleate (Span 80) and polyoxyethylenesorbitan monooleate (Tween 80) with a specified HLB and oil volume fraction. Oil was added into water, which contained the water-soluble surfactant, to dissolve the oil-soluble surfactant. This route allowed TPI to occur, and an interesting emulsification process was observed by varying the HLB, which corresponded to the change in the oil–water ratio. Two types of emulsions in the emulsification process were found: transition emulsion 1 (W/O/W high internal phase emulsion) and target emulsion 2 (W/O emulsion with low viscosity). This study describes the changes that occurred in the emulsification process.

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A Three-Step Model for Submicron W/O Emulsion Formation in a Transitional-Phase Inversion Process

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A Three-Step Model for Submicron W/O Emulsion Formation in a Transitional-Phase Inversion Process

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