| Polymer | Band (cm−1) | Band (cm−1) (0.0 min) | Band (cm−1) (120 min) | Type of vibration | Intensity |
| PVBP + 10.0% DOT | 3749 | 3749 | 3748 | C−O−C stretching vibration | Increasing |
| 3421 | 3421 | 3421 | (O−H), stretching vibration of carboxylic acid | Decreasing | |
| 3021 | 3021 | 3032 | (=C−H), stretching vibration of Aromatic | Increasing | |
| 2919 | 2919 | 2919 | (C−H), stretching vibration of benzene | Increasing | |
| 2840 | 2840 | 2842 | (O−H) stanching vibration | Increasing | |
| 1721 | 1721 | 1726 | (C=O) stanching vibration | Increasing | |
| 1608 | 1608 | 1610 | (C=C) stanching vibration in dines | Increasing | |
| 1480 | 1480 | 1485 | (C=C) stretching of aromatic | Increasing | |
| 1116 | 1116 | 1118 | (C−O) stanching vibration | Decreasing | |
| 1106 | 1106 | 1106 |
| Increasing | |
| 825 | 825 | 835 | Conjugated double bond | Increasing | |
| 763 | 763 | 768 | (=C−H) stretch vibration | Decreasing | |
| PVBP + 10.0% DET | 3743 | 3743 | 3749 | C−O−C stretching vibration | Increasing |
| 3446 | 3446 | 3449 | (OH), stretching vibration of carboxylic acid | Decreasing | |
| 3021 | 3021 | 3032 | (=C−H), stretching vibration of Aromatic | Increasing | |
| 2919 | 2919 | 2921 | (C−H), stretching vibration of benzene | Increasing | |
| 2842 | 2842 | 2847 | (O−H) stanching vibration | Increasing | |
| 1721 | 1721 | 1722 | (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 | |
| PVBP + 10.0% DMT | 3743 | 3743 | 3749 | C−O−C stretching vibration | Increasing |
| 3446 | 3446 | 3447 | (OH), stretching vibration of carboxylic acid | Decreasing | |
| 3027 | 3027 | 3032 | (=C−H), stretching vibration of Aromatic | Increasing | |
| 2919 | 2919 | 2921 | (C−H), stretching vibration of benzene | Increasing | |
| 2842 | 2842 | 2847 | (O−H) stanching vibration | Increasing | |
| 1721 | 1721 | 1723 | (C=O) stanching vibration |
| |
| 1623 | 1623 | 1639 | (C=C) stanching vibration in dines | Increasing | |
| 1480 | 1480 | 1490 | (C=C) stretching of aromatic | Increasing | |
| 1106 | 1106 | 1106 | (C−O) stanching vibration | Decreasing | |
| 830 | 830 | 835 | Conjugated double bond | Increasing | |
| 758 | 758 | 763 | (=C−H) stretch vibration | Decreasing |