OPTIMUM O/W EMULSIFICATION 461 o 3 6 z c::) • N 2 Z, • z I-- C:) m,m N 3 O --) z o 1 2 ,,, O-- MEAN DROPLET SIZE •,----- 5OLUBILIZATION LIMIT 0 0 0 .2 .• .6 .8 1 POE (2) POE ( ? ) OLEYL ETHER OLEYL ETHER WEIGHT FRACTION OF HYDROPHILIC 5URFACTANT Figure 2. Solubilization-emulsion droplet size correlation for binary surfactant systems. (Emulsions contain 30 per cent mineral oil, 65 per cent aleionized water, and 5 per cent nonionic surfactant mixtures. Surfactant mixtures consist of hydrophilic POE (7) oleyl ether and lipophilic POE (2) oleyl ether at ratios indicated by abscissa)
462 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS z 10 , , 7 6 N 4 O---MEAN DROPLET SIZE /•--- SOLUBILIZATION LIMIT 20 10 i,i I,i z o o 0 .2 .4 .6 .8 1 SPAN 20 TWEEN 20 WEIGHT FRACTION OF HYDROPHILIC 5URFACTANT Figure 3. Solubilization-emulsion droplet size correlation for binary surfactant systems. (Emulsions contain 30 per cent mineral oil, 65 per cent deionized water, and 5 per cent nonionic surfactant mixtures. Surfactant mixtures consist of hydrophilic Tween 20 and lipophilic Span 20 at ratios indicated by abscissa)
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