Soybean oil microemulsions with oleic acid/glycols as cosurfactants |
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Authors: | Email author" target="_blank">F?ComellesEmail author J?Sánchez-Leal J?J?González |
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Affiliation: | (1) Surfactant Department, Instito de Investigaciones Químicas y Ambientales de Barcelona (IIQAB), Consejo Superior de Investigaciones Científicas (CSIC), c/.Jordi Girona 18-26, 08034 Barcelona, Spain |
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Abstract: | The preparation of biocompatible microemulsions of soybean oil in systems made of anionic surfactant, oleic acid, water, and
several glycols was considered. The selected glycols were ether derivatives (methyl, ethyl, dimethyl, and diethyl ether) of
ethylene glycol and diethylene glycol. The study was performed using pseudoternary phase diagrams in which the three apexes
were occupied by soybean oil, a combination of surfactant/oleic acid, and a combination of water/glycol, respectively. The
widest regions of microemulsions were obtained for systems containing methyl ether and especially ethyl ether of both ethylene
glycol and diethylene glycol. The two latter compounds allowed the preparation of oil-in-water, bicontinuous, and water-in-oil
microemulsions with final surfactant contents of 3–4%. |
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Keywords: | Cosurfactants glycols oleic acid soybean oil microemulsions |
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