Figure 1From: Hydroxyapatite Mineralization on the Calcium Chloride Blended Polyurethane Nanofiber via Biomimetic MethodHigh magnification FE-SEM images of electrospun polyurethane nanofibers containing different concentration of CaCl 2 salt before incubation in SBF solution (a1) 0, (b1) 1, (c1) 1.5 and (d1) 2 wt% and the corresponding EDX spectra (a2)–(d2), respectively.Back to article page