Jańczuk B, Sierra JAM, González-Martín ML, Bruque JM, Wójcik W
Faculty of Chemistry, Maria Curie-Sklodowska University, Lublin, 20-03, Poland
J Colloid Interface Sci. 1997 Aug 15;192(2):408-14. doi: 10.1006/jcis.1997.5054.
Measurements of the surface tension of aqueous solutions of decylammonium chloride (DACl) and cesium perfluorooctanoate (CsPFO) and the interfacial tension of DACl (CsPFO) solution-decane and DACl (CsPFO) solution-benzene systems were made at 293 and 303 K. On the basis of these measurements, the adsorption isotherms and the standard free energies of adsorption were determined. Also, the standard free energy of adsorption was determined from the surface free energy of the tails of DACl and CsPFO and the interfacial free energy of the tail-water system. It was found that the standard free energy of adsorption at a given temperature only slightly depends on the type of phase in contact with the solutions of the surfactants and can be determined on the basis of the surface and interfacial free energy of systems including the tails of the surfactants. It was also found that standard free energy of adsorption depends on temperature, and is considerably smaller for CsPFO than for DACl. Copyright 1997Academic Press
在293K和303K下，对癸基氯化铵（DACl）和全氟辛酸铯（CsPFO）水溶液的表面张力以及DACl（CsPFO）溶液 - 癸烷和DACl（CsPFO）溶液 - 苯体系的界面张力进行了测量。基于这些测量，确定了吸附等温线和吸附标准自由能。此外，根据DACl和CsPFO尾部的表面自由能以及尾部 - 水体系的界面自由能确定了吸附标准自由能。结果发现，在给定温度下，吸附标准自由能仅略微依赖于与表面活性剂溶液接触的相的类型，并且可以基于包含表面活性剂尾部的体系的表面和界面自由能来确定。还发现吸附标准自由能取决于温度，并且CsPFO的吸附标准自由能比DACl的小得多。版权所有1997学术出版社
