Insights of PHB/QC Biocomposites: Thermal, Tensile and Morphological Properties

In the present work composites based on poly (hydroxybutyrate) (PHB) and quasi-crystals (Al 62.0 Cu 25.5 Fe 12.5 ) (QC), i.e., PHB/QC were processed aiming at biodegradable compounds with improved performance. According to the particle size evaluation and scanning electron microscopy images the added QC phase presented particle diameters with approximately 5 µm which conducted to homogeneously dispersed higher composites hardness, as evidenced through Shore D Hardness testing and SEM images. QC improved PHB melting and delayed decomposition without losses on the thermal stability. The elastic modulus increased upon QC addition whereas subtle decrease was verified in the elongation at break mechanisms. Summing up, harder and thermal stable PHB/QC composites were produced which may be used for applications where biodegradable and biocompatible characters are requested.