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Open AccessArticle

Temperature Effect on the Adsorption and Volumetric Properties of Aqueous Solutions of Kolliphor®ELP

Department of Interfacial Phenomena, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University in Lublin, Maria Curie-Skłodowska Sq. 3, 20-031 Lublin, Poland
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Molecules 2020, 25(3), 743; https://doi.org/10.3390/molecules25030743 (registering DOI)
Received: 10 January 2020 / Revised: 5 February 2020 / Accepted: 6 February 2020 / Published: 9 February 2020
(This article belongs to the Section Physical Chemistry)
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. View Full-Text
Keywords: Kolliphor® ELP; volume expansivity; thermo-acoustic parameters; Gruneisen parameter; fractional free volume; coiling and micropolarity index Kolliphor® ELP; volume expansivity; thermo-acoustic parameters; Gruneisen parameter; fractional free volume; coiling and micropolarity index
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Szymczyk, K.; Szaniawska, M.; Krawczyk, J. Temperature Effect on the Adsorption and Volumetric Properties of Aqueous Solutions of Kolliphor®ELP. Molecules 2020, 25, 743.

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