Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

ABSTRACT

The surface tension (c) of 2-diethylaminoethanol (DEAE), DEAE-monoethanolamine (MEA), and DEAEpiperazine (PZ) aqueous solutions was measured by using the BZY-1 surface tension meter. The temperature ranged from 303.2 K to 323.2 K. The mass fraction of DEAE, MEA and PZ respectively ranged from 0.30 to 0.50, 0.05 to 0.15 and 0.025 to 0.075. An equation was proposed to model the surface tension and the calculated results agreed well with the experiments. The effects of temperature and mass fraction of amines on the surface tension were demonstrated on the basis of experiments and calculations.