Surface tension of liquid fluorocompounds
authors Freire, MG; Carvalho, PJ; Queimada, AJ; Marucho, IM; Coutinho, JAP
nationality International
journal JOURNAL OF CHEMICAL AND ENGINEERING DATA
keywords INTERFACIAL-TENSION; PERFLUOROCARBON EMULSIONS; BINARY-MIXTURES; VAPOR-PRESSURE; SOLUBILITY; EICOSANE; SYSTEMS; HEPTANE; OXYGEN; WATER
abstract This work aims at studying the surface tension of some linear, cyclic, aromatic, and alpha-substituted perfluorocarbons. Despite its fundamental interest, information about this property for these compounds is scarce, and the available data are old and present strong discrepancies among each other. The measurements were carried out in the temperature range (283 to 327) K with the Du Nouy ring method. The analysis of the experimental data shows that the molecular structure is an important factor in the surface behavior of the studied compounds since the aromatic fluorocompounds present the highest surface tensions, followed by the cyclic and substituted fluorocompounds. The linear n-perfluoroalkanes exhibit the lowest surface tension values, slightly increasing with the carbon number. The surface thermodynamic functions such as surface entropy and enthalpy were derived from surface tension values and are also reported. The experimental data were compared against the Faizullin correlation, and it is shown that this correlation describes the measured surface tensions with deviations inferior to 4 %.
publisher AMER CHEMICAL SOC
issn 0021-9568
year published 2006
volume 51
issue 5
beginning page 1820
ending page 1824
digital object identifier (doi) 10.1021/je060199g
web of science category Thermodynamics; Chemistry, Multidisciplinary; Engineering, Chemical
subject category Thermodynamics; Chemistry; Engineering
unique article identifier WOS:000240496200059
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journal analysis (jcr 2017):
journal impact factor 2.196
5 year journal impact factor 2.331
category normalized journal impact factor percentile 58.053
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