Effect of Solvents on the Ultrasonic Velocity and Acoustic Parameters of Polyvinylidene Fluoride Solutions

Table 2

Variation of density, viscosity, and ultrasonic velocity of PVDF with different concentrations of dimethylformamide at 300 K.

Concentration; mass%	Density; kg/m^3	Viscosity; 10^−3 Nsm^−2	Ultrasonic velocity; m/s
0.00	934.20	0.7921	1454.00
0.10	934.92	0.9084	1474.00
0.20	937.04	0.9156	1478.00
0.30	938.16	1.0505	1482.50
0.40	939.04	1.0818	1485.00
0.50	940.88	1.3422	1486.60

Compounded uncertainty in measurement of density () = ±0.52, viscosity () = ±0.0188, and ultrasonic velocity () = ±0.20 with level of confidence is 95%.