Molecular Interaction Study of Polyvinylchloride in Dimethylformamide at Different Concentrations and Temperatures

Table 6

Acoustic impedance (×10³ kgm²s⁻¹) at different temperatures and concentrations at 1 MHz for polyvinylchloride (PVC).

Concentration (%)	Temperature
	30°C	35°C	40°C	45°C	50°C	55°C	60°C	65°C
1.0	1330.6	1304.1	1248.2	1183.1	1164.2	1118.9	1094.0	1077.6
0.8	1294.9	1282.2	1241.6	1168.2	1148.5	1097.7	1078.7	1071.7
0.6	1195.8	1134.4	1105.9	1030.5	988.6	962.0	944.1	920.1
0.5	1123.1	1072.4	1054.9	993.3	957.2	938.8	928.8	917.2
0.4	1057.9	1026.0	1002.3	941.4	915.6	897.9	887.2	883.6
0.3	1005.7	937.5	913.2	903.2	858.0	821.0	817.0	809.2