Fig. 5From: Colorful Hydrophobic Poly(Vinyl Butyral)/Cationic Dye Fibrous Membranes via a Colored Solution Electrospinning ProcessSEM images of the colorful NFMs: PVB (a), PVB/X-GRL (b), PVB/X-10GFF (c), PVB/X-GB (d), PVB/X-2RL (e), and the fiber diameters distributions of the prepared colorful NFMs (f). The inset SEM images in (a)–(d) are the enlarged SEM images of the corresponding colorful NFMs. The error bars in (f) suggest the degree of evenness of the different colorful NFMs diametersBack to article page