IR Analysis of Polymers: N-H Bond Stretching Vibration

To eliminate residues and by-products, the polymers underwent a process of ethanol washing and purification, followed by drying and grinding. Tablets were subsequently pressed using KBr at ambient temperature. Infrared (IR) analysis was conducted on the polymers, and the results are depicted in Figure 1. A prominent absorption peak in the range of 3443 cm-1 to 3202 cm-1 indicates the stretching vibration absorption of the N-H bond.