Compatibilization, processing and characterization of poly(butylene adipate terephthalate)/polylactide (PBAT/PLA) blends

Abstract A blend of poly(butylene adipate terephthalate) (PBAT) and polylactide (PLA) is a combination biodegradable materials. This study aims to prepare compatibilized PBAT/PLA in cost-effective timesaving way process the material into blown films by fine-tuning processing parameters. First, catalyst masterbatch prepared transesterification PBAT PLA presence tetrabutyl titanate (TBT) as catalyst. followed compounding two polymer types with masterbatch. Third, compounds are processed panels. The parameters for film blowing set reduce anisotropy. Finally, properties evaluated such mechanical tests. parameter settings including blow-up ratio draw-down results higher degree isotropy film. By adding (2 wt%, which corresponds TBT approximately 0.002 wt% copolymers formed) settings, samples achieved significant improvement on properties. morphology cryogenically fractured panel shows decrease diameter dispersed phase. In cross machine directions, elongation at break increased 85 93%, trouser tear propagation resistance 2.4 10 N mm −1 , respectively. Furthermore, both isotropy.