Investigation of Crystallization Kinetics in Polyhydroxyalkanoates through Hyperthermal Cycles.

ABSTRACT: Polyhydroxyalkanoates (PHAs) are emerging, promising sustainable biobased, biodegradable polymers with strong potential to replace conventional plastics in packaging, agricultural, cosmetics, and biomedical applications. In this study, we investigate the crystallization behavior of two key PHA typespolyhydroxybutyrate (PHB) and poly-(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)under both isothermal and nonisothermal conditions using controlled hyperthermal cycles. Isothermal analyses were performed following rapid hypercooling at 500 °C/min to isolate crystallization kinetics, effectively minimizing interference from the cooling stage. The isothermal data revealed activation energies of 91 kJ/mol for PHB and 139 kJ/mol for PHBV. Hypercooling cycles were also employed to examine

SUBMITTER: Mondol A 

PROVIDER: S-EPMC12355614 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature