Tearing fracture of poly(lactic acid) (PLA)/ poly(butylene succinate-co-adipate) (PBSA) cast extruded films: Effect of the PBSA content
Laura Aliotta, Vito Gigante, Bianca Dal Pont, Filip Miketa, Maria‐Beatrice Coltelli, Andrea Lazzeri
Abstract
The development of bio-based film formulations that show mechanical properties comparable to current fossil films is a challenging technological goal. Poly(lactic acid) (PLA) is the most attractive bio-based polymer; however, its poor ductility limits its use for film application. To overcome this issue, in this work PLA was blended with a ductile poly(butylene succinate-co-adipate) (PBSA) bio-based polymer, and cast extruded PLA/PBSA films were produced with differing PBSA amounts (20, 30 and 40 wt%). The mechanical properties of the film were evaluated both in machine and cross direction. The tearing resistance of the produced film was implemented with the essential work of fracture approach to explore the mode III out-of-plane fracture resistance.