*2.1. ES PLA95*/β*-TCP Fibrous Membranes*

Poly-5D/95L-lactide (PLA95) was provided by BioTech One Inc. (Taipei, Taiwan) with inherent viscosity (I.V.) of 0.6 dL/g. The solution dope was prepared by mixing 20 w/v% PLA95 used a mixed dichloromethane/dimethylformamide (DCM/DMF: 7/3 (v/v)) solvent and 3% (w/v) β-TCP powders (<23 μm) under an ultrasonic vibrator to prevent the β-TCP powders from agglomerating, then spun it via electrospinning (ES) technique using the setup shown in Figure 1.

**Figure 1.** Electrospinning setup and ES PLA95/β-TCP membranes.

The ES PLA95/β-TCP membranes were sterilized by gamma-radiation. The membranes were gold-coated, and their morphology was examined by scanning electron microscopy (SEM, S-2400; Hitachi, Tokyo, Japan), followed by characterization with Image J analytical software (NIH, MD, USA)
