Document Type : Research Paper


1 Department of Chemistry, College of Science, Al-Nahrain University, Baghdad, 10070, Iraq

2 Department of Chemical Industries, Institute of Technology-Baghdad, Middle Technical University, Baghdad, Iraq

3 Department of Chemistry, Faculty of Science, Bani Waleed University, Bani Waleed, Libya

4 Department of Chemistry, Faculty of Education, Thamar University, Dhamar 87246, Yemen


Improving the stability of PVC became a task for many research groups to improve its properties and lower plastic pollution. An invented Schiff base was applied as a heat-resistant agent to alter polyvinyl chloride (PVC) behavior under varying temperatures. The efficacy of the Schiff base-treated PVC films in terms of thermal stability was assessed through weight-loss analysis, Fourier transform infrared (FTIR) spectroscopy, an optical microscope, and atomic force microscopy (AFM). The outcomes demonstrated that incorporating the altered PVC extended the polymer's stability duration, consequently lowering its inclination towards degradation. Furthermore, the Schiff base led to a marked decrease in the presence of PVC's conjugated double bonds, consequently reducing weight loss. The enhancement observed can be credited to the Schiff base's strong ability to neutralize HCl and its effectiveness in protecting unstable chlorine atoms within the polymer chains. These alterations, when combined, resulted in a prolonged delay in thermal degradation and alterations in color, affirming the success of the modification method in improving the thermal stability of PVC.


Main Subjects

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