Figure 10.

SEM micrographs of electrospun structures obtained from H₂O:IPA in 10:7 weight ratio solutions. (a) 3.2 wt.% HA $M_{\mathrm{w}}$ 600 kDa; (b) 2.3 wt.% HA $M_{\mathrm{w}}$ 600 kDa; (c) 1.3 wt.% HA $M_{\mathrm{w}}$ 600 kDa; (d) 2.9 wt.% HA $M_{\mathrm{w}}$ 1180 kDa; (e) 1.2 wt.% HA $M_{\mathrm{w}}$ 1180 kDa.