Abstract
The main problem related to poly(vinyl chloride) (PVC) is the migration of the plasticisers into the environment. In the study, the influence of the modification of plasticised (PVC) with a polyester binary blend that was composed of recycled polylactide/poly(butylene terephthalate-co-butylene sebacate) (rPLA/PBTSe) on the selected properties of films as well as their susceptibility to abiotic and biotic attack was examined. The polyester binary blend was used for the modification of PVC for the first time. In contrast to rPLA/PBTSe blend, the ternary blend of PVC, PLA, and PBTSe showed a single Tg behaviour suggesting the synergistic effect of PVC on improved miscibility of the polyester components of the binary blend. A two-fold increase in the elasticity of the resulting films compared to PVC was achieved. PVC, as well as the compositions with rPLA/PBTSe, turned out to be unsusceptible to white rot fungi Phanerochaete chrysosporium. The presence of rPLA/PBTSe in the ternary blend hampered both bis(2-ethylhexyl) phthalate (DEHP) leaching into the environment and the activity of fungal hydrolytic enzymes. This feature of the reported blend should be beneficial for its extended application.
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