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Journal of Dispersion Science and Technology Volume 31, 2010 - Issue 8
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Original Articles

Adsorption of Some Surfactants onto Polyvinyl Alcohol as Hydrophobic Polymer Surface

A. A. El Feky Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt
,
M. N. Shalaby Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, EgyptCorrespondence[email protected]
,
O. A. A. El-Shamy Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt
&
S. A. Selim Faculty of Science, Ain Sham University, Cairo, Egypt
Pages 1091-1099 | Received 21 Mar 2009, Accepted 03 Apr 2009, Published online: 27 Jul 2010
 
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Abstract

The adsorption of different types of nonionic and anionic surfactants from aqueous solutions onto polyvinyl alcohol has been studied at different temperatures using surface tension measurements. The nonionic surfactants show Langmuirian L-shape isotherms whereas the adsorption isotherms of the anionic surfactants exhibit segmoidal shape. The experimental adsorption isotherms could be fitted to the Langmuir equation and the values of Γmax and Amin have been calculated. The effect of temperature on the adsorption process as well as on both efficiency and effectiveness of adsorption has been studied.

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