Abstract
Videomicroscopy was used to observe the dynamic behavior which occurred when a small drop of pure oleyl alcohol was brought into contact with an aqueous solution of a pure nonionic surfactant. The drop experienced significant swelling as it took up surfactant and water until its composition reached a point where the lamellar liquid crystalline phase began to develop as myelinic figures growing toward the aqueous solution. A quasi-steady state analysis requiring relatively little information on phase behavior was developed and successfully used to explain the effects of drop size and initial surfactant concentration on the time until liquid crystal formation began. The analysis was also adapted to the case of a thin oil film on a solid surface in an agitated surfactant solution, which is closer to the Situation encountered in practice. The implications of the results for detergency are discussed. A major mechanism for removal of soils containing substantial amounts of polar compounds appears to be incorporation of soil components into myelinic figures which form as described above and are broken off and dispersed as a result of agitation in the washing bath.
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Lim, JC., Miller, C.A. (1991). Dynamic Behavior in Systems Containing Nonionic Surfactants and Polar Oils and its Relationship to Detergency. In: Mittal, K.L., Shah, D.O. (eds) Surfactants in Solution. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-3836-3_34
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DOI: https://doi.org/10.1007/978-1-4615-3836-3_34
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