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Zdziennicka A, Jańczuk B. Effect of anionic surfactant and short-chain alcohol mixtures on adsorption at quartz/water and water/air interfaces and the wettability of quartz. J Colloid Interface Sci. 2010;354(1):396-404doi: 10.1016/j.jcis.2010.09.063.
Zdziennicka, A., & Jańczuk, B. (2011). Effect of anionic surfactant and short-chain alcohol mixtures on adsorption at quartz/water and water/air interfaces and the wettability of quartz. Journal of colloid and interface science, 354(1), 396-404. https://doi.org/10.1016/j.jcis.2010.09.063
Zdziennicka, Anna, and Jańczuk, Bronisław. "Effect of anionic surfactant and short-chain alcohol mixtures on adsorption at quartz/water and water/air interfaces and the wettability of quartz." Journal of colloid and interface science vol. 354,1 (2011): 396-404. doi: https://doi.org/10.1016/j.jcis.2010.09.063
Zdziennicka A, Jańczuk B. Effect of anionic surfactant and short-chain alcohol mixtures on adsorption at quartz/water and water/air interfaces and the wettability of quartz. J Colloid Interface Sci. 2011 Feb 01;354(1):396-404. doi: 10.1016/j.jcis.2010.09.063. Epub 2010 Sep 29. PMID: 21055764.
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J Colloid Interface Sci. 2011 Feb 01;354(1):396-404. doi: 10.1016/j.jcis.2010.09.063. Epub 2010 Sep 29.

Effect of anionic surfactant and short-chain alcohol mixtures on adsorption at quartz/water and water/air interfaces and the wettability of quartz.

Journal of colloid and interface science

Anna Zdziennicka, Bronisław Jańczuk

Affiliations

  1. Department of Interfacial Phenomena, Faculty of Chemistry, Maria Curie-Sk?odowska University, Maria Curie-Sk?odowska Sq. 3, 20-031 Lublin, Poland.

PMID: 21055764 DOI: 10.1016/j.jcis.2010.09.063

Abstract

Measurements of the advancing contact angles for aqueous solutions of sodium dodecyl sulfate (SDDS) or sodium hexadecyl sulfonate (SHS) in mixtures with methanol, ethanol, or propanol on a quartz surface were carried out. On the basis of the obtained results and Young and Gibbs equations the critical surface tension of quartz wetting, the composition of the surface layer at the quartz-water interface, and the activity coefficients of the anionic surfactants and alcohols in this layer as well as the work of adhesion of aqueous solutions of anionic surfactant and alcohol mixtures to the quartz surface were determined. The analysis of the contact angle data showed that the wettability of quartz changed visibly only in the range of alcohol and anionic surfactant concentration at which these surface-active agents were present in the solution in the monomeric form. The analysis also showed that there was a linear dependence between the adhesion and the surface tension of aqueous solutions of anionic surfactant and alcohol mixtures. This dependence can be described by linear equations for which the constants depend on the anionic surfactant and alcohol concentrations. The slope of all linear dependence between adhesion and surface tension was positive. The critical surface tension of quartz wetting determined from this dependence by extrapolating the adhesion tension to the value equal to the surface tension (for contact angle equal zero) depends on the assumption whether the concentration of anionic surfactant or alcohol was constant. Its average value is equal to 29.95mN/m and it is considerably lower than the quartz surface tension. The positive slope of the adhesion-surface tension curves was explained by the possibility of the presence of liquid vapor film beyond the solution drop which settled on the quartz surface and the adsorption of surface-active agents at the quartz/monolayer water film-water interface. This conclusion was confirmed by the work of adhesion of aqueous solutions of anionic surfactants and short-chain alcohol mixtures to the quartz surface determined on the basis of the contact angle data and molar fraction of anionic surfactants and alcohols and their activity coefficient in the surface layer.

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