Mechanical properties and in vitro degradation of electrospun bio-nanocomposite mats from PLA and cellulose nanocrystals

► PLA/CNC bio-nanocomposites were electrospun by a mixed-solvent at room temperature. ► Incorporation of CNCs reduced observably the diameter of electrospun fibers. ► Enhanced mechanical and thermal properties of mats were achieved. ► Reinforcement mechanism of CNCs on bio-nanocomposite mats was illustrated. ► Bio-nanocomposite mats presented rapid in vitro biodegradability.