Mechanical and Thermal Properties of the Plasticized PVC-ESBO

The thermal and mechanical properties of plasticized PVC with epoxidized soya bean oil(PVC-ESBO) are studied. The repulsive interactions are used to explain the effect of epoxidization on the modulus of PVC with ESBO and plasticizer. The glass transition temperature of PVC is a linear function of the epoxidization of ESBO plasticizer. The activation energies of stabilized PVC/ESBO is also influenced by dehydrorochlorination reaction and HCI evolution. Addition of ESBO improves thermal behaviour of PVC. The higher activation energies of Ca-Zn, Ba-Zn stabilizers are responsible for the stability of PVC-ESBO. The epoxidization level of ESBO also improves the mechanical properties and thermal stability of PVC.