Low Energy Gamma Radiation Induced Effects on Ultrasonic Velocity and Acoustic Parameters in Polyvinylidene Fluoride Solution

Table 2

Variation of acoustic parameters: compressibility, intermolecular free path length, acoustic impedance, relative association, attenuation, and relaxation time of PVDF with different concentration in dimethylacetamide.

Concentration “” mass%	Intermolecular free path length “”; ×10^−11	Acoustic impedance “Z”; ×10^6	Relative association (RA)	Ultrasonic attenuation; ×10^−14	Relaxation time; 10^−13
0.00	4.5827	1.3809	—	2.34544	5.75739
0.20	4.4586	1.4252	0.9965	2.7859	6.9999
0.50	4.0695	1.6862	0.9950	2.7476	7.0045