Table 1.
Summary of Morphology, Surface, and Bulk Properties of Nonsterilized and Ozone Gas Sterilized Poly(Lactic-co-Glycolic Acid) Scaffolds (n = 3)
| Ozone sterilization | Fiber diameter (nm) | Contact angle (°) | ΔHrelax (J/g)a | Tg (°C)b | Tensile strength (MPa) | Young's modulus (MPa) |
|---|---|---|---|---|---|---|
| None | 670 ± 40 | 128.3 ± 1.3 | 8.8 ± 0.4 | 51.8 ± 0.1 | 3.41 ± 0.11 | 118 ± 5 |
| 2 pulses | 634 ± 36 | 125.6 ± 0.4 | 9.8 ± 0.2 | 51.8 ± 0.1 | 3.75 ± 0.14 | 128 ± 6 |
| 4 pulses | 636 ± 51 | 126.1 ± 0.6 | 9.7 ± 0.2 | 52.0 ± 0.1 | 3.33 ± 0.18 | 114 ± 7 |
| 8 pulses | 664 ± 28 | 124.5 ± 0.7 | 9.7 ± 0.2 | 51.6 ± 0.1 | 2.91 ± 0.15 | 88 ± 3 |
a
Enthalpy Relaxation (first scan).
b
Glass transition temperature obtained from the second scan.