Biodegradable multiblock copolymers containing poly[(3-hydroxybutyrate)-co-(3-hydroxyvalerate)], poly(ε-caprolactone), and polyhedral oligomeric silsesquioxane: synthesis, characterization, and tensile property

Biodegradable multiblock copolymers based on poly[(3-hydroxybutyrate)-co-(3-hydroxyvalerate)] (PHBV), poly(e-caprolactone) (PCL), and polyhedral oligomeric silsesquioxane (POSS) were synthesized by one-step copolymerization with 1,6-hexamethylene diisocyanate (HDI) as a coupling agent. The chemical structures, molecular weight, and polydispersity index of the PHBV/PCL/POSS multiblock copolymers were confirmed by 1H NMR, FTIR, and gel permeation...