Articles & Issues

Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received June 14, 2001
Accepted February 15, 2002

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

All issues

Novel Evaluation Method for the Water-in-Oil (W/O) Emulsion Stability by Turbidity Ratio Measurements

Myung-Geun Song Sung-Ho Cho Jong-Yun Kim¹ Jong-Duk Kim^†

Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Korea ¹LG Household & Health Care Research Park, #84 Jang-dong, Yusung-gu, Daejeon 305-343, Korea

kjd@kaist.ac.kr

Korean Journal of Chemical Engineering, May 2002, 19(3), 425-430(6), 10.1007/BF02697151

Download PDF

Abstract

The turbidity ratio method of evaluating the stabilities of water-in-oil emulsions has been established with two wavelengths (450 and 850 nm) by taking the intensity ratio of two beams. The slopes of turbidity ratio of several water-in-oil emulsions with time were calculated to evaluate the emulsion stabilities at different HLB (Hydrophilie-Lipophile Balance), the amounts of emulsifiers, and water contents. The results of the turbidity ratio technique were consistent with the amount of phase separation of emulsions incubated for 30 days at room temperature. From the turbidity ratio measurements, we determined that the required HLB of diesel oil was about 6.0, and that the stability of emulsion increased with the amount of emulsifier. The increasing amount of the water showed a negative effect on emulsion stability. Finally, this method provides a useful tool for the quick evaluation of the required HLB and the condition of emulsification throughout this study.

Keywords

Stability of Emulsion W/O Emulsion Turbidity Ratio Required HLB Droplet Size Distribution

References

Becher P, "Encyclopedia of Emulsion Technology," Marcel Dekker, Inc., New York, 3, 41 (1988)
Dreher TM, Glass J, O'Connor AJ, Stevens GW, AIChE J., 45(6), 1182 (1999)
Forster T, Schambil F, Vonrybinski W, J. Disper. Sci. Tech., 13(2), 183 (1992)
Frenkel M, Shwartz R, Garti N, J. Dispersion Sci. Tech., 3(2), 195 (1982)
Gunji M, Ueda H, Ogata M, Nakagaki M, Nakagaki Yakugaku Zasshi, 112(12), 906 (1992)
Kaufman KR, Garti N, J. Dispersion Sci. Tech., 2(4), 475 (1981)
Kerker M, "The Scattering of Light and Other Electromagnetic Radiation," Academic Press, New York (1969)
Kim JG, Kim JD, HWAHAK KONGHAK, 26(2), 171 (1988)
Latreille B, Paquin P, J. Food Sci., 55(6), 1666 (1990)
Lee MH, Tai CY, Lu CH, Korean J. Chem. Eng., 16(6), 818 (1999)
Melik DH, Fogler HS, J. Colloid Interface Sci., 92, 161 (1983)
Reddy SR, Fogler HS, J. Colloid Interface Sci., 79(1), 128 (1981)
Song MG, Jho SH, Kim JY, Kim JD, J. Colloid Interface Sci., 230(1), 213 (2000)
Tadros TF, Colloids Surf. A: Physicochem. Eng. Asp., 91, 39 (1994)
Tambe DE, Sharma MM, Adv. Colloid Interface Sci., 52, 1 (1994)
Treiner C, Laurent A, Fessi H, Orecchioni AM, J. Colloid Interface Sci., 129(1), 201 (1989)