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Flowchart describing the bulk material and cage characterization. This sequence of testing events was followed for each polymer group (PPF; PPF:HA (80:20); PPF:HA (70:30); and PPF:HA (60:40)). Bulk material was characterized by TGA and FTIR, and by ASTM standards for compression, tension, bending, and hardness. Nonporous (with/without holes) and porous (with holes) cages were tested in compression.
