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http://dx.doi.org/10.14478/ace.2019.1012

Changes in Rheological Properties of O/W Emulsions according to the Type of Nonionic Surfactant and Emulsion Stabilizer  

Choi, Joong Seok (Department of Health and Cosmetics, Dongduk Women's University)
Jin, Byung Suk (Division of Chemistry and Cosmetics, Dongduk Women's University)
Publication Information
Applied Chemistry for Engineering / v.30, no.4, 2019 , pp. 415-420 More about this Journal
Abstract
To investigate the effect of nonionic surfactant and emulsion stabilizer on O/W emulsions, various emulsion formulations with different types of nonionic surfactants and emulsion stabilizers were prepared and their rheological properties were compared. In this study, polysorbate 60 (Tween 60), PEG-60 hydrogenated castor oil (HCO 60), octyldodeceth-16 (OD 16), and ceteareth-6 olivate (Olivem 800) were used as hydrophilic nonionic surfactants, whereas cetyl alcohol, glyceryl monostearate, and stearic acid as emulsion stabilizers. Phase separation occurred only in the emulsion formulation with octyldodeceth-16 and all other emulsion formulations maintained a stable phase. The viscosity, hardness, and creaminess of emulsion formulation using a mixture of ceteareth-6 olivate and cetyl alcohol were the highest, and the emulsified droplet size was also the largest. These results are due to the formation of a network structure texture with the development of a large amount of liquid crystal in the O/W emulsion. In this formulation, the value of elastic modulus was large and the thixotropic behavior, in which the viscosity varies with the history of external force, was observed.
Keywords
Nonionic surfactant; Emulsion stabilizer; O/W emulsion; Rheological property; Liquid crystal;
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Times Cited By KSCI : 2  (Citation Analysis)
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