Morphology and Release Kinetics of Protein-Loaded Porous Poly(L-Lactic Acid) Spheres Prepared by Freeze-Drying Technique

Table 3

Mass fraction of BSA 𝑓_BSA and void fraction 𝑟_𝑣,loadedof BSA-loaded FDPLLA.

𝐶0 (wt%)		𝑓BSA (wt%)	𝑟𝑣,loaded (vol%)
2.0	Amorphous	79.1	89.7
2.0	Crystallized	53.0	71.1
5.0	Amorphous	63.4	83.1
5.0	Crystallized	43.8	71.4
8.0	Amorphous	51.3	82.8
8.0	Crystallized	34.5	68.0