Reconcentration of a polydisperse non-ionic surfactant in aqueous solution by adsorption induced ultrafiltration
作者： Saleh M. Mahdi , Rolf O. Sköld
DOI: 10.1016/0166-6622(92)80152-R
关键词: Critical micelle concentration 、 Membrane 、 Pulmonary surfactant 、 Ultrafiltration 、 Adsorption 、 Aqueous solution 、 Permeation 、 Chemical engineering 、 Cloud point 、 Chromatography 、 Chemistry
摘要: Abstract Aqueous solutions of 1-octanol polyoxyethylene glycol monoether with an average 4.5 ethylene oxide units per molecule were subjected to ultrafiltration using hydrophobic membranes. Permeate concentrations always exceeded feed solution at temperatures below the cloud point and this fact together observed occurrence permeation maxima flux minima close critical micelle concentration was construed indicate that surfactant adsorption onto membrane pores induced excess permeation. Observed concentration- temperature-related variations in for individual homologues are also discussed terms prevailing concepts regarding micelle-monomer partitioning temperature effects on from aqueous solution.
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