Fig. 7.

Schematic illustration showing the nature of sol–gel/polymer solution (a) and (b) mechanism of the corresponding electrospinning process. (c) A conceptual image showing the sol–gel formation for a polymer solution which consists of an inorganic salt; the corresponding behavior of this solution during the electrospinning process is demonstrated in panel (d). (e) TEM images of nylon 6 with NaCl (1.5 wt%). Reprinted with permission from [34]. © 2009 Elsevier B.V.