The improved isopiestic method was used to measure 1-propanol activity data for several binary mixtures of 1-propanol + poly (propylene glycol) 400 (PPG400 )/ poly (propylene glycol) 725 (PPG725 )/ poly (propylene glycol) 1025 (PPG1025) at 298.15 K. The effect of polymer molar mass was considered on the solvent activity and vapor pressure of the studied systems. The results indicate that solvent activity increases with the increasing of the polymer molar mass. These data have been correlated with different activity models including Flory- Huggins (FH), modified Flory Huggins, NRTL, NRF-NRTL, Wilson, and NRF-Wilson models. The obtained values for standard deviations for the models represents that modified Flory Huggins model have good agreement with the experimental data. The apparent specific volume, excess specific volume, isentropic compressibility, isentropic compressibility increments and apparent specific isentropic compressibility quantities were obtained with use of density and speed of sound values in the 1-propanol + poly (propylene glycol) 400/poly (propylene glycol) 725 systems at T = (288.15 to 318.15)K which supplies the strong solute-solvent interactions between 1-propanol with PPG400 rather than other polymers.
Compounds
#
Formula
Name
1
C3H8O
propan-1-ol
Datasets
The table above is generated from the ThermoML associated json file (link above).
POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied;
the numbers refer to the table of compounds on the left.