*2.2. Methods*

#### 2.2.1. Electrospinning Process

The electrospinning process was carried out using a Fluidnatek LE −10 electrospinning machine (Bioinicia, Valencia, Spain). Main process parameters: flow rate (μL/h), needle-to-collector distance (cm) and voltage (kV) were optimized to obtain a satisfactory nanofiber morphology, without visible defects, beads or drops within the fiber structure. The optimal voltage was 19 kV, flow rate was 200 μL/h and needle-to-collector distance was 15 cm.

#### 2.2.2. Material Characterization
