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

Myung-Geun Song; Sung-Ho Cho; Jong-Yun Kim; Jong-Duk Kim

Korean Journal of Chemical Engineering, Vol.19, No.3, 425-430, May, 2002

DOI10.1007/BF02697151 Export Citation

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, and 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

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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)

[Related Articles]

[1] Becher P, "Encyclopedia of Emulsion Technology," Marcel Dekker, Inc., New York, 3, 41 (1988)

[2] Dreher TM, Glass J, O'Connor AJ, Stevens GW, AIChE J., 45(6), 1182 (1999)

[3] Forster T, Schambil F, Vonrybinski W, J. Disper. Sci. Tech., 13(2), 183 (1992)

[4] Frenkel M, Shwartz R, Garti N, J. Dispersion Sci. Tech., 3(2), 195 (1982)

[5] Gunji M, Ueda H, Ogata M, Nakagaki M, Nakagaki Yakugaku Zasshi, 112(12), 906 (1992)

[6] Kaufman KR, Garti N, J. Dispersion Sci. Tech., 2(4), 475 (1981)

[7] Kerker M, "The Scattering of Light and Other Electromagnetic Radiation," Academic Press, New York (1969)

[8] Kim JG, Kim JD, HWAHAK KONGHAK, 26(2), 171 (1988)

[9] Latreille B, Paquin P, J. Food Sci., 55(6), 1666 (1990)

[10] Lee MH, Tai CY, Lu CH, Korean J. Chem. Eng., 16(6), 818 (1999)

[11] Melik DH, Fogler HS, J. Colloid Interface Sci., 92, 161 (1983)

[12] Reddy SR, Fogler HS, J. Colloid Interface Sci., 79(1), 128 (1981)

[13] Song MG, Jho SH, Kim JY, Kim JD, J. Colloid Interface Sci., 230(1), 213 (2000)

[14] Tadros TF, Colloids Surf. A: Physicochem. Eng. Asp., 91, 39 (1994)

[15] Tambe DE, Sharma MM, Adv. Colloid Interface Sci., 52, 1 (1994)

[16] Treiner C, Laurent A, Fessi H, Orecchioni AM, J. Colloid Interface Sci., 129(1), 201 (1989)