%0 Journal Article %1 citeulike:2459551 %A Rosen, M. J. %A Wu, Y. %C Surfactant Research Institute, Brooklyn College, The City University of New York, Brooklyn, New York 11210 %D 2001 %J Langmuir %K wetting surfactant superspreading %N 23 %P 7296--7305 %R 10.1021/la010466a %T Superspreading of Trisiloxane Surfactant Mixtures on Hydrophobic Surfaces. 1. Interfacial Adsorption of Aqueous Trisiloxane Surfactant-N-Alkyl Pyrrolidinone Mixtures on Polyethylene %U http://dx.doi.org/10.1021/la010466a %V 17 %X Abstract: Interfacial adsorptions of aqueous solutions of trisiloxane surfactant (SILWET L77), N-alkyl pyrrolidinones N-butyl-(C4P), N-cyclohexyl-(CHP), N-hexyl-(C6P), N-2-ethyhexyl-(C2,6P), N-octyl-(C8P), and N-decyl-(C10P), and their mixtures have been measured. The adsorptions at the air/aqueous solution interface were obtained from the plots of surface tension versus log(C) by use of the Gibbs equation. The adsorptions onto the powdered polyethylene surface were determined by the use of UV spectroscopy for pyrrolidinones and two-phase titration for SILWET L77, respectively. The adsorptions at the solid/air interface were evaluated by the use of an equation derived from the Gibbs and Young equations. It was found that the addition of the N-alkyl pyrrolidinones to the solution produces little or no enhancement of the total surfactant adsorption at the air/aqueous solution interface. At the solid/aqueous solution interface, the enhancement effectiveness of the pyrrolidinones decreases in the order C2,6P > C8P > C6P > CHP > C4P, and their enhancement efficiency decreases in the order C2,6P > C8P > CHP > C6P > C4P. However, C10P, the most effective surface-active agent among the pyrrolidinones, produces no enhancement in the adsorption of L77 at both the air/aqueous solution and the solid/aqueous solution interfaces. The adsorptions of the individual surfactants and their mixtures at the solid/air interface are shown to be smaller by 1 order of magnitude than those at the air/aqueous solution and solid/aqueous solution interfaces. Consequently, the most significant fact of the addition of N-alkyl pyrrolidinones to an aqueous solution of L77 is the enhancement of the adsorption of L77 at the solid/aqueous solution interface.

@article{citeulike:2459551, abstract = {{Abstract: Interfacial adsorptions of aqueous solutions of trisiloxane surfactant (SILWET L77), N-alkyl pyrrolidinones [N-butyl-(C4P), N-cyclohexyl-(CHP), N-hexyl-(C6P), N-2-ethyhexyl-(C2,6P), N-octyl-(C8P), and N-decyl-(C10P)], and their mixtures have been measured. The adsorptions at the air/aqueous solution interface were obtained from the plots of surface tension versus log(C) by use of the Gibbs equation. The adsorptions onto the powdered polyethylene surface were determined by the use of UV spectroscopy for pyrrolidinones and two-phase titration for SILWET L77, respectively. The adsorptions at the solid/air interface were evaluated by the use of an equation derived from the Gibbs and Young equations. It was found that the addition of the N-alkyl pyrrolidinones to the solution produces little or no enhancement of the total surfactant adsorption at the air/aqueous solution interface. At the solid/aqueous solution interface, the enhancement effectiveness of the pyrrolidinones decreases in the order C2,6P > C8P > C6P > CHP > C4P, and their enhancement efficiency decreases in the order C2,6P > C8P > CHP > C6P > C4P. However, C10P, the most effective surface-active agent among the pyrrolidinones, produces no enhancement in the adsorption of L77 at both the air/aqueous solution and the solid/aqueous solution interfaces. The adsorptions of the individual surfactants and their mixtures at the solid/air interface are shown to be smaller by 1 order of magnitude than those at the air/aqueous solution and solid/aqueous solution interfaces. Consequently, the most significant fact of the addition of N-alkyl pyrrolidinones to an aqueous solution of L77 is the enhancement of the adsorption of L77 at the solid/aqueous solution interface.}}, added-at = {2017-06-29T07:13:07.000+0200}, address = {Surfactant Research Institute, Brooklyn College, The City University of New York, Brooklyn, New York 11210}, author = {Rosen, M. J. and Wu, Y.}, biburl = {https://www.bibsonomy.org/bibtex/2757259aeadea88b198f18d89c655a60f/gdmcbain}, citeulike-article-id = {2459551}, citeulike-attachment-1 = {rosen_01_superspreading_33701.pdf; /pdf/user/gdmcbain/article/2459551/33701/rosen_01_superspreading_33701.pdf; c6ca6e7755a87ff723cf8f56d37be441740aee5d}, citeulike-linkout-0 = {http://dx.doi.org/10.1021/la010466a}, citeulike-linkout-1 = {http://pubs.acs.org/doi/abs/10.1021/la010466a}, day = 13, doi = {10.1021/la010466a}, file = {rosen_01_superspreading_33701.pdf}, interhash = {81904b6ff7ccd4b9b9e81ebbb81e9073}, intrahash = {757259aeadea88b198f18d89c655a60f}, journal = {Langmuir}, keywords = {wetting surfactant superspreading}, month = nov, number = 23, pages = {7296--7305}, posted-at = {2008-03-03 05:28:14}, priority = {2}, timestamp = {2023-02-16T02:38:00.000+0100}, title = {{Superspreading of Trisiloxane Surfactant Mixtures on Hydrophobic Surfaces. 1. Interfacial Adsorption of Aqueous Trisiloxane Surfactant-N-Alkyl Pyrrolidinone Mixtures on Polyethylene}}, url = {http://dx.doi.org/10.1021/la010466a}, volume = 17, year = 2001 }