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Effect of Palm Oil Bio-Based Plasticizer on the Morphological, Thermal and Mechanical Properties of Poly(Vinyl Chloride)

Abstract: Flexible poly(vinyl chloride) (PVC) was fabricated using a palm oil-based alkyd as aco-plasticizer to di-octyl phthalate (DOP) and di-isononyl phthalate (DiNP). The effects of theincorporation of the palm oil-based alkyd on morphological, thermal and mechanical propertiesof PVC compounds were studied. Results showed the incorporation of the alkyd enhanced themechanical and thermal properties of the PVC compounds. Fourier transform infrared spectroscopy(FTIR) results showed that the polar –OH and –C=O groups of alkyd have good interaction withthe –C–Cl group in PVC via polar interaction. The morphological results showed good incorporationof the plasticizers with PVC. Improved tensile strength, elastic modulus, and elongation at breakwere observed with increasing amount of the alkyd, presumably due to chain entanglement of thealkyd with the PVC molecules. Thermogravimetric analysis results conﬁrmed that the alkyd hasimproved the thermostability of the PVC compounds. Keywords: biodegradable; biocompatible; plasticizer; poly(vinyl chloride)