Initial inter-phase transport of compounds in a model emulsion system |
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Authors: | Jie Chen Lingling Ge Stig E Friberg Rong Guo |
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Institution: | (1) School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, People’s Republic of China; |
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Abstract: | Three-phase geranyl acetate emulsions stabilized by a non-ionic surfactant, Laureth 4, were prepared with a constant weight
fraction of a lamellar liquid crystal and varied aqueous to oil phase weight ratios according to the phase diagram. The appearance
and micrographs of the drop pattern versus time were recorded. As expected, emulsions with the lower values of the water to
oil (W/O) ratio appeared to be of the W/O variety while the two more stable emulsions with the highest W/O ratio appeared
as oil to water (O/W). Considering the surfactant exclusive solubility in the oil, this result was unexpected and the emulsions
were investigated as to their structure. Unpredictably, all the emulsions were of the O/W kind; including the highest ratio
of oil to water. The reason for this unanticipated outcome was the lamellar liquid crystal being dispersed into the aqueous
phase at the slightest perturbation. |
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Keywords: | |
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