Crystallization kinetics of poly(3-hydroxybutyrate-co-3-hydroxyvalerate)/cellulose nanowhiskers composites

► CNW is reinforcing and nucleating agent for PHBV. ► CNW concentration influence crystal structure and crystallization kinetics of PHBV. ► CNW content of >2.3 wt% results in CNW agglomerations. ► CNWs influence PHBV crystallization through nucleation and spherulite growth. ► CNW distribution and interconnected structure govern mechanical properties of PHBV/CNW.