PHBH

The development of biobased and environmental-friendly polymeric materials to replace petroleum-based plastics is one of the main global challenges nowadays. Among biopolymers, polyhydroxyalkanoates (PHAs) have gained increasing attention due to their compostability under environmental conditions. Copolymers of poly(3-hydroxybutyrate) (PHB) with comonomers belonging to PHA types have been developed to tackle better processability, higher ductility, and better impact properties. These common copolymers could be listed as poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH). Compared to PHB and PHBV, PHBH has revealed a wider processing window with better thermal stability and more promising mechanical performance due to its tailorable composition of both highly crystalline (3HB) and elastomeric (3HH) units.