Figure 1.

SEM images of electrospun PDLLA/collagen scaffolds. (A), (B), (C) and (D) are PDL20, PDL40, PDL60 and PDL80 as-spun scaffolds, respectively; (E), (F), (G) and (H) are PDL20, PDL40, PDL60 and PDL80 scaffolds after water immersion, respectively, water immersion was conducted in deionised water overnight in room temperature; (I), (J), (K) and (L) are PDL20, PDL40, PDL60 and PDL80 scaffolds after incubation in distilled water overnight (37 °C, 5% CO₂ and 95% relative humidity), respectively; (M), (N), (O) and (P) show the impact of GTA crosslinking on the stability of PDL20, PDL40, PDL60 and PDL80 scaffolds, respectively; crosslinking was performed using GTA vapour (25%, w/v) at room temperature, and the resultant scaffolds were incubated in distilled water overnight (37 °C, 5% CO₂ and 95% relative humidity) before imaging. Scale bar = 10 µm.