Temperature effect on the adsorption of 1,1,2,2-tetrahydroheptadecafluorodecanol

Article Abstract:

A 1,1,2,2-tetrahydroheptadecafluorodecanol Cf3(CF2)7(CH2)2-OH (FC10OH) was used to investigate the partial molar entropy and energy changes with adsorption and the adsorption behavior of fluoroalkanol. The interfacial tension gamma of a hexane solution of FC10OH against water was calculated as a function of temperature and molality under atmospheric pressure. Results indicated that the transition from the gaseous to the expanded state and from the expanded to the condensed state in the adsorbed film of the FC10OH involves two phases of the first-order type.

Monomolecular films, Thermodynamics, Fluorocarbons

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Phase transition in the adsorbed film of the alkanol and fluoroalkanol mixture

Article Abstract:

Research was conducted to examine the phase transition in the adsorbed film of the 1-icosanol, C20OH, and FC10OH mixture. The interfacial tension of the hexane solution of C20OH and FC1OOH mixture against water was calculated as a function of total molality m and composition of FC10OH, X2 at 298.15 K under atmospheric pressure. Resutls indicate that the phase transition from the C20OH to the FC10OH condensed state does not occur at the second break point.

Phase transformations (Statistical physics), Phase transitions (Physics), Hexane

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