Rheology of the Sponge Phase of the SDS–Hexanol–Brine System

We have studied the rheological properties of the sponge phases (or L 3 ) of the sodium dodecyl sulfate (SDS)–hexanol–brine (NaCl 20 g/l) system at different bilayer volume fractions. The most concentrated samples display a Newtonian behavior even at high shear rates, while the more diluted ones dep...

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Bibliographic Details
Published in:Journal of surfactants and detergents 2017-03, Vol.20 (2), p.445-451
Main Authors: Briceño Ahumada, Zenaida Cenorina, Soltero Martínez, J. Félix Armando, Carvajal Ramos, Francisco, Maldonado, Amir
Format: Article
Language:English
Subjects:
Additives
Aquatic Pollution
Brines
Chemistry
Chemistry and Materials Science
Industrial Chemistry/Chemical Engineering
Lamellar phase
Original Article
Phase transitions
Physical Chemistry
Polyethylene glycol
Polymer Sciences
Polymers
Rheology
SDS surfactant
Shear‐induced transition
Sodium chloride
Sponge phase
Surfaces and Interfaces
Surfactants
Temperature effects
Thin Films
Waste Water Technology
Water Management
Water Pollution Control
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Summary:We have studied the rheological properties of the sponge phases (or L 3 ) of the sodium dodecyl sulfate (SDS)–hexanol–brine (NaCl 20 g/l) system at different bilayer volume fractions. The most concentrated samples display a Newtonian behavior even at high shear rates, while the more diluted ones depart from it, probably due to a transition from the sponge to a lamellar structure. Two linear variation zones were observed when the viscosity was measured as a function of bilayer volume fraction. The effect of temperature on the rheology of a sample with bilayer volume fraction of 0.024 is discussed, and also how the addition to the system of polyethylene glycol, a water-soluble polymer, affects this transition.
ISSN:1097-3958
1558-9293
DOI:10.1007/s11743-017-1930-3