Aloulou F, Boufi S, Beneventi D
LMSE, Faculté des Sciences de Sfax, B.P. 802-3018 Sfax, Tunisia.
J Colloid Interface Sci. 2004 Dec 15;280(2):350-8. doi: 10.1016/j.jcis.2004.08.008.
The adsorption of anionic surfactants with different hydrophobic chain lengths onto cellulose fibers pretreated with a cationic polyelectrolyte has been investigated. Five steps are involved in the adsorption process, which was ascribed to the formation of monolayer and bilayer surfactant aggregates. Electrostatic interaction between the residual surface charges followed by hydrophobic interaction among the alkyl chains are considered the main factors in the adsorption process. The adsorption of the anionic surfactant was found to greatly enhance the retention of organic compounds onto the polyelectrolyte-treated cellulose. The coadsorption phenomenon, which was dependent on the saturation level of the adsorbed surfactant, has been explained in terms of the accumulation of the organic solute on the hydrophobic core generated by the adsorbed layer.
研究了不同疏水链长度的阴离子表面活性剂在经阳离子聚电解质预处理的纤维素纤维上的吸附情况。吸附过程涉及五个步骤，这归因于单层和双层表面活性剂聚集体的形成。残余表面电荷之间的静电相互作用以及随后烷基链之间的疏水相互作用被认为是吸附过程中的主要因素。发现阴离子表面活性剂的吸附极大地增强了有机化合物在聚电解质处理的纤维素上的保留。共吸附现象取决于吸附表面活性剂的饱和水平，已根据有机溶质在吸附层产生的疏水核上的积累来解释。
