Temperature Effect on the Adsorption and Volumetric Properties of Aqueous Solutions of Kolliphor®ELP
OPEN Molecules (Basel, Switzerland) | 14 Feb 2020
K Szymczyk, M Szaniawska and J Krawczyk
Density, viscosity and surface tension of Kolliphor® ELP, the nonionic surfactant aqueous solutions were measured at temperature T = 293-318 K and at 5K interval. Steady-state fluorescence measurements have been also made using pyrene as a probe. On the basis of the obtained results, a number of thermodynamic, thermo-acoustic and anharmonic parameters of the studied surfactant have been evaluated and interpreted in terms of structural effects and solute-solvent interactions. The results suggest that the molecules of studied surfactant at concentrations higher than the critical micelle concentration act as structure makers of the water structure.
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