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

Table 3

Ultrasonic velocity (m/s) of polyvinylchloride (PVC) at different temperatures and concentrations at 1 MHz frequency.

Concentration (%)	Temperature
	30°C	35°C	40°C	45°C	50°C	55°C	60°C	65°C
1.0	1264.1	1258.3	1210.8	1197.5	1189.8	1160.8	1153.9	1143.6
0.8	1242.8	1238.6	1207.3	1190.6	1187.6	1154	1143	1138.5
0.6	1240.6	1210.4	1204.6	1188.3	1177.3	1150.6	1142.6	1136
0.5	1224.2	1206	1181.6	1178	1150.7	1148.4	1142	1132.2
0.4	1187	1181.8	1172.5	1165.2	1150.4	1146.7	1142	1131.6
0.3	1177.6	1168.1	1156.8	1152	1146	1136.6	1131.2	1130.6