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Synergistic effect of co-stabilizers on the thermal stability of polyvinyl chloride

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Author Affiliations

  • 1School of Chemical Sciences, North Maharashtra University, Jalgaon-425001, Maharashtra, India
  • 2School of Chemical Sciences, North Maharashtra University, Jalgaon-425001, Maharashtra, India

Res. J. Material Sci., Volume 5, Issue (3), Pages 1-5, June,16 (2017)

Abstract

In this research work synergistic effect between layered double hydroxide (LDH) and epoxidised sunflower oil (ESO) on the thermal stabilization of poly-vinyl chloride has been investigated. Synthesis of zinc glutarate and epoxidation reaction on sunflower oil was carried out in the laboratory. The Ca/Zn based soap compounds were used for the primary stabilizer for PVC. Synergistic effect of LDH with Ca/Zn stabilizer on the thermal stabilization of PVC with and without ESO was studied. Thermal stability of PVC was determined by Congo red test as a stability time (ts) while discoloration of the PVC sheets were examined using static oven test. Likewise thermal degradation of PVC was evaluated by Thermogravimetric analyzer (TGA) in terms of onset temperature from TGA curves. The results shows the enhancement in the thermal stabilization of PVC in presence of LDH and ESO. However, stabilizing effect of LDH with ESO on the thermal stability of PVC was more pronounced due to the mechanism of synergism by scavenging liberated HCl which obstructs the further degradation of PVC.

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