Five types of composite feedstock were made: PLLA + 2 wt.% BC; PLLA + 2 wt.% C6-BC; PLLA + 2 wt.% C12-BC; PLLA + 7 wt.% CNC; PDLLA containing 7 wt.% CNC. For the production of CNC containing composite spheres, the concentration of CNCs was adjusted to the correct amount relative to PLA in 1,4-dioxane and the