Figure 5: SEM images of electrospun structures (chitosan/PEO ratio 90/10) prepared from aqueous solution containing 0.5M acetic acid: (A) 0.3% Triton X-100™, (B) and (C) 0.3% Triton X-100™ and 10% DMSO. Fibers in (B) were collected on a stationary collector whereas fibers in (C) were collected on a cylindrical collector with a rotating speed of 2000 rpm. Images (D) and (E) are the high-magnification images of (B) and (C), respectively. (from ref [49] with permission).