Polymer blends based on poly(vinyl chloride) and biodegradable aliphatic–aromatic copolyester

Abstract

Blends of poly(vinyl chloride) (PVC) and biodegradable aliphatic-aromatic copolyester (AAC) were prepared, and their physical, thermal, and mechanical properties were studied. Biodegradation in the presence of the lipases of Rhisopus arrhisus or Candida cilindracea was monitored as well. The physical properties of the blends, such as density and softening temperature, were between those of each component. Differential scanning calorimetry measurements showed that the blend components were completely amorphous and miscible. Obviously, PVC suppressed the crystallization of the partially crystalline copolyester. AAC was the thermally more stable component, and it seemed to improve the thermooxidative stability of PVC in the blends. The lipases of R. arrhisus and C. cilindracea no doubt catalyzed the ester hydrolysis of AAC, although the PVC matrix limited the rate and extent of the hydrolysis.

Properties enhancement of partially biodegradable polyamide/polylactide blends through compatibilization with novel polyalkenyl-poly-maleic-anhydride-amide/imide-based additives

“…For instance, Andricic et al has described a system based on poly (vinyl chloride) and aromatic biodegradable polyester. 10 Another approach can be observed in a work by Velasco et al, where polylactide (PLA) was blended with poly (methyl methacrylate) to obtain a system with controlled release of incorporated drug. 11 In analogy of that, our work deals with polymer blends based on PLA and polyamide 6 (PA6).…”

Effect of poly(epichlorohydrin) on the thermal and mechanical properties of poly(vinyl chloride)

“…Hence, the migration rate is reduced. Many literatures have reported the studies on the blending properties of PVC and its polymeric plasticizers, which include poly(butylene adipate) (PBA),19, 20 poly(propylene imine) dendrimers,21 PMMA,22 poly(butyl acrylate) (PBA),23 acrylonitrile butadiene rubber (NBR), ethylene vinyl acetate (EVA),24 aliphatic‐aromatic copolyester (AAC),25 polyesteramides,26 epoxidized liquid natural rubber (ELNR),27 to cite just a few. Blend of PVC and each plasticizer has its unique properties, on the basis of which different plasticizers can be used for different purposes.…”