Fig. 2.

Different physicochemical characterization of developed non-functionalized (PHA/PCL, P/PCL-ALN and PHA/PCL-ALN) and PDA surface-functionalized (PDA@PHA/PCL-ALN) nanofiber scaffolds. (a) Typical strain-stress curves of different nanofiber; (b) Young's modulus; (c) Tensile strength measurement, and (d) Elongation at break; (e) Water contact angle; (f) FTIR spectra's; (g) XRD spectra's; (h–i) XPS analysis of PHA/PCL-ALN and PDA@PHA/PCL-ALN; (j) TGA analysis of different nanofibers under a N₂ atmosphere; (k–l) Drug release behavior of ALN and Ca²⁺.