Fig. 4

Fiber diameter (A) and pore size distribution (B). In the case of 2L-type materials, the values refer to the fibrous areas on the outer surface. ns – not significant, ***p < 0.001 vs. each other group. Mechanical properties of the analyzed materials: Young's modulus (C), elongation at break (D), and tensile strength (E). MV±SD, n = 5, *p < 0.05, **p <0.01, ***p <0.005