Synthesis of zinc para-aminobenzoate and investigation of it,s effect as PVCgreen thermal stabilizer

Polyvinyl chloride (PVC), a widely used plastic, suffers degradation at high temperatures. This studyinvestigates a novel green additive to enhance its thermal stability. While calcium and zinc stabilizersare traditionally used, they lead to the formation of zinc chloride (ZnCl۲), which unfortunatelyaccelerates this degradation. We propose zinc para-aminobenzoate (Zn(PABA)۲) as a replacement.Zn(PABA)۲ significantly improves the thermal stability of PVC at congo paper test compared to bothunstabilized PVC and the traditional stabilizers, demonstrating an increase of about ۱۱۱ % and ۰۱ %respectively. The experimental data suggest that this enhanced stability is attributed to the ability ofZn(PABA)۲ in binding the resulting HCl and ZnCl۲, preventing their catalytic effect and subsequentPVC further degradation.

کلیدواژه ها:

Polymer Nanocomposite ، Poly Vinyl Chloride ، Green Thermal Stabilizer ، Paraaminobenzoicacid