Abstract
Using sodium activity, viscosity, and cloudpoint measurements, it has been shown that sodium dodecyl sulphate (SDS) binds to ethyl(hydroxyethyl)cellulose in a cooperative manner. In the absence of salt the binding leads to an increase in the clouding temperature, but when a small amount of salt (0.01 molal) is present first a drastic decrease and then an equally drastic increase in the cloud point temperature is observed. The binding of SDS also initially leads to an increase in viscosity followed by a decreased viscosity at higher SDS concentrations. A molecular mechanism explaining the observed behavior is given.
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Carlsson, A., Karlström, G., Lindman, B. et al. Interaction between ethyl(hydroxyethyl)cellulose and sodium dodecyl sulphate in aqueous solution. Colloid & Polymer Sci 266, 1031–1036 (1988). https://doi.org/10.1007/BF01428813
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DOI: https://doi.org/10.1007/BF01428813