Abstract
The displacement of n-dodecane by aqueous solutions of sodium dodecyl sulfate in glass capillaries with periodically varying cross-section has been studied. By measuring the dynamic contact angles of the moving fluid interface upon variation of surfactant concentration c s , flow rate v and viscosity ratio {ie82-1}, of oil to water according to a three-level quadratic experimental design, significant pair-interdependences have been found between the influence of c s and v as well as between that of c s and {ie82-2} on the displacement. The results indicate that in addition to these parameters which are generally used to characterize the efficacy of oil displacement, other factors such as surface viscosity and rigidity of the liquid/liquid interfacial film as well as the stability of the oil film adhered to the capillary wall have to be taken into account, too.
To the memory of Professor Bun-ichi Tamamushi.
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© 1983 Dr. Dietrich Steinkopff Verlag GmbH & Co. KG
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Wolfram, E., Kiss, É., Pintér, J. (1983). An experimental study of liquid/liquid displacement phenomena in periodically shaped capillaries. In: Nakagaski, M., Shinoda, K., Matijević, E. (eds) Frontiers in Colloid Science In Memoriam Professor Dr. Bun-ichi Tamamushi. Progress in Colloid & Polymer Science, vol 68. Steinkopff. https://doi.org/10.1007/BFb0114143
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DOI: https://doi.org/10.1007/BFb0114143
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