ABSTRACT

The density, viscosity and ultrasonic velocity (2 MHz) of pure solvents: ethanol, MEK and DMF, and BCFA solutions (0.5.4 wt%) were investigated at three different temperatures: 30, 35 and 40 .C. Various acoustical parameters such as isentropic compressibility ( Es), internal pressure ( I), free volume (Vf), free path length (Lf) and solvation number (Sn) were determined and correlated with concentration (C). Fairly good to excellent linear relationships are observed at three temperatures. The linear decrease of Es, I and Lf with C and linear increase with temperature; and linear increase of Vf with C and T in DMF system, nonlinear increase with C and T in EtOH system and nonlinear decrease with C and increase with T in MEK system indicated strong molecular interactions in the solutions and solvophilic nature of BCFA, which is further supported by positive values of solvation number. The observed solvation trend is EtOH greater thanMEKgreater thanDMF.

Compounds

#	Formula	Name
1	C2H6O	ethanol
2	C4H8O	butanone
3	C3H7NO	dimethylformamide

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.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Pycnometric method	3
POMD	1	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	3
POMD	1	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	3
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Pycnometric method	3
POMD	2	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	3
POMD	2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	3
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Pycnometric method	3
POMD	3	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	3
POMD	3	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	3

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Effect of temperature on ultrasonic velocity and thermodynamic parameters of bisphenol-C-formaldehyde-acrylate resin solutions

Mehta, N. M., Karia, F. D., Parsania, P. H.

ABSTRACT