Abstract
An enhanced adsorption of Na-dodecylsulphate (SDS) at Na-montmorillonite is observed through a specific binding to an adsorbed layer of nonionic polyvinylpyrrolidone (PVP) polymer. These results are supported by electrokinetic measurements and the fluorescence pyrene probe method. At high PVP loadings, a negative electrophoretic mobility increase and the fluorescence detection of PVP/SDS aggregates confirm that a PVP coiled structure promotes the interactions with anionic SDS molecules outside the range of electrostatic repulsion forces arising from the negatively charged montmorillonite surface.
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© 1998 Dr. Dietrich Steinkopff Verlag GmbH & Co. KG
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Hild, A., Séquaris, J.M., Narres, H.D., Schwuger, M.J. (1998). Adsorption of anionic surfactant Na-dodecylsulphate (SDS) at the polyvinylpyrrolidone (PVP)-modified Na-montmorillonite surface. In: Rehage, H., Peschel, G. (eds) Structure, Dynamics and Properties of Disperse Colloidal Systems. Progress in Colloid & Polymer Science, vol 111. Steinkopff. https://doi.org/10.1007/BFb0118128
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DOI: https://doi.org/10.1007/BFb0118128
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