Enhanced Thermal Stability of Polymers Demonstrated Through Thermogravimetric Analysis

The presented figure illustrates that at a 50% weight loss, the decomposition temperature surpasses 400℃, indicating commendable thermal stability for all five polymers. Thermogravimetric analysis (TGA) of these polymers elucidates a three-stage weight loss profile. The initial stage exhibits weight reduction below 210℃, ascribed to the desorption of absorbed water molecules by the polymers, specifically those incorporating amide, methylene, and sulfonic acid functional groups.