Talc reinforcement of polylactide and biodegradable polyester blends via injection‐molding and pilot‐scale film extrusion

As a renewable and biodegradable polymer, polylactide (PLA) has taken foothold in the packaging industry. However, thermomechanical barrier properties of PLA-based films need to be improved facilitate wider adoption. To address this challenge, we examined effect talc reinforcement composites based on PLA polyester. Masterbatches polymers were produced by melt compounding processed either injection-molding or film extrusion pilot-scale unit operating at 60–80 m/min. The was investigated relation morphological, thermal, mechanical, composites. Based SEM-imaging, found increase miscibility polyester while acting as nucleating agent that crystallinity. While did not track with an increased mechanical strength, 3–4 wt% displayed significantly higher water vapor. Compared neat polymer films, reduction vapor transmission rate, ~34–37%, observed 23°C/50% RH. Meanwhile, systems loaded 1 showed oxygen rates, up 34%. Our results highlight challenges prospects commercial blends filled from extruded units.