Figure 3.

SEM images of the prepared nanofibers: (a)—pure PLA nanofibers obtained under 30 kV; (b)—pure PLA nanofibers obtained under 35 kV; (c)—acylated chitosan; (d)—PLA nanofibers obtained under 30 kV covered with Fe₃O₄ nanoparticles; (e)—PLA nanofibers obtained under 35 kV covered with Fe₃O₄ nanoparticles; (f)—XRF analysis of the surface composition (g)—PLA nanofibers obtained under 30 kV covered with ZnO nanoparticles; (h)—PLA nanofibers obtained under 35 kV covered with ZnO nanoparticles; (i)—XRF analysis of the surface composition (j)—PLA nanofibers obtained under 30 kV covered with Au nanoparticles (k)—PLA nanofibers obtained under 35 kV covered with Au nanoparticles; (l)—XRF analysis of the surface composition.