Effect of polyelectrolyte-surfactant complexation on Marangoni transport at a liquid-liquid interface

Journal of Colloid and Interface Science
Gunnar DunérTodd M Przybycien

Abstract

Complexation of surfactants and oppositely charged polyelectrolytes is expected to alter Marangoni transport at a fluid interface compared to either single component system due to altered interfacial tension isotherms and mass transfer rates as well as adsorption irreversibility effects. We investigate Marangoni transport at the oil/water interface by passing mixtures of the anionic surfactant sodium dodecyl sulfate (SDS) and cationic polyelectrolyte poly(3-(2-methylpropionamide)propyl) trimethylammonium chloride-acrylamide (poly[AM-MAPTAC]), or rinsing solutions, over an oil/water interface in a radial, stagnation point flow. The displacements of adsorbed tracer particles are recorded through optical microscopy. The net displacement, defined as the sum of the displacements occurring during the adsorption and desorption stages of one application and rinsing cycle, is up to 10 times greater for complexing surfactant/polymer mixtures compared to either single component system. The enhanced net displacement is largely determined by the enhanced transport upon adsorption, while the reverse displacement that would normally occur upon rinsing is partially suppressed by partially irreversible polymer adsorption at the oil/water interf...Continue Reading

References

Nov 20, 1998·Journal of Colloid and Interface Science·C D Eggleton, K J Stebe
Feb 16, 2006·Environmental Science & Technology·René-Christian Bouillon, William L Miller
Mar 26, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Olga SantosLennart Piculell

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Citations

May 10, 2017·Colloids and Surfaces. A, Physicochemical and Engineering Aspects·Ramankur SharmaRobert D Tilton
Apr 4, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Jiangyu LiuXuemin Wu
May 6, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Sangchul RohNicholas L Abbott
Nov 16, 2016·Carbohydrate Polymers·Tonimar D A SenraJacques Desbrières
Dec 31, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Michael TsueiNicholas L Abbott

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