Department of Interfacial Phenomena, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University in Lublin, Maria Curie-Skłodowska Sq. 3, Lublin 20-031, Poland.
Molecules. 2020 Feb 9;25(3):743. doi: 10.3390/molecules25030743.
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.
在温度 T = 293-318 K 范围内,以 5K 的间隔测量了非离子表面活性剂 kolliphor elp 的密度、粘度和表面张力水溶液。还使用芘作为探针进行了稳态荧光测量。基于获得的结果,评估并解释了研究表面活性剂的许多热力学、热声和非谐参数,以结构效应和溶质-溶剂相互作用。结果表明,在高于临界胶束浓度的浓度下,研究表面活性剂的分子充当水结构的结构形成剂。