Aqueous solutions of sodium dodecylpoly(oxyethylene) sulfates with one, two, and four oxyethylene units per monomer have been investigated at various NaCl concentrations by laser-light scattering, tensiometry, and conductometry. The critical micelle concentration, the aggregation number, the hydrodynamic radius, and the micellar hydration are given as functions of the number of oxyethylene units and of the salt concentration. The interpretation of the light-scattering data in terms of DLVO theory permits the derivation of also the electric charge of the micelle and the amplitude of attractive intermicellar forces. © 1986 American Chemical Society.
Micellar properties of sodium dodecylpoly(oxyethylene) sulfates
MINERO, Claudio;PRAMAURO, Edmondo;PELIZZETTI, Ezio;
1986-01-01
Abstract
Aqueous solutions of sodium dodecylpoly(oxyethylene) sulfates with one, two, and four oxyethylene units per monomer have been investigated at various NaCl concentrations by laser-light scattering, tensiometry, and conductometry. The critical micelle concentration, the aggregation number, the hydrodynamic radius, and the micellar hydration are given as functions of the number of oxyethylene units and of the salt concentration. The interpretation of the light-scattering data in terms of DLVO theory permits the derivation of also the electric charge of the micelle and the amplitude of attractive intermicellar forces. © 1986 American Chemical Society.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
