| Polymer | Band (cm−1) | Band (cm−1) (0.0 min) | Band (cm−1) (120 min) | Type of vibration | Intensity |
| PVBP + 10.0% DOT | 3742 | --- | 3742 | C-O-C stretching vibration | New band |
| 3426 | 3426 | 3431 | (O−H), stretching vibration of carboxylic acid | Decreasing | |
| 3021 | 3021 | 3032 | (=C−H), stretching vibration of Aromatic | Increasing | |
| 2924 | 2924 | 2929 | (C−H), stretching vibration of benzene | Increasing | |
| 2840 | 2840 | 2840 | (O−H) stanching vibration | Increasing | |
| 1720 | 1720 | 1726 | (C=O) stanching vibration | Increasing | |
| 1623 | 1623 | 1623 | (C=C) stanching vibration in dines | Increasing | |
| 1539 | 1539 | 1539 |
|
| |
| 1483 | --- | 1483 | (C=C) stretching of aromatic | New band | |
| 1116 | 1116 | 1118 | (C−O) stanching vibration | Decreasing | |
| 1106 | 1106 | 1106 |
| Increasing | |
| 830 | 830 | 835 | Conjugated double bond | Increasing | |
| 758 | 758 | 758 | (=C−H) stretch vibration | Increasing | |
| PVBP + 10.0% DET | 3857 | --- | 3857 | (O−H), stretching vibration | Decreasing |
| 3741 | 3741 | 3743 | C−O−C stretching vibration | Increasing | |
| 3441 | 3441 | 3446 | (OH), stretching vibration of carboxylic acid | Increasing | |
| 3030 | 3030 | 3032 | (=C−H), stretching vibration of Aromatic | Increasing | |
| 2924 | 2924 | 2926 | (C−H), stretching vibration of benzene | Increasing | |
| 2845 | 2845 | 2847 | (O−H) stanching vibration | Increasing | |
| 1721 | 1721 | 1726 | (C=O) stanching vibration |
| |
| 1618 | 1618 | 1623 | (O−H) stanching vibration | Increasing | |
| 1480 | 1480 | 1485 | (C=C) stanching vibration in dines | Increasing | |
| 1234 | 1234 | 1236 | (C=C) stretching of aromatic | Increasing | |
| 1111 | 1111 | 1116 | (C−O) stanching vibration | Decreasing | |
| 825 | 825 | 835 | Conjugated double bond | Increasing | |
| 753 | 753 | 758 | (=C−H) stretch vibration | Decreasing |