256161.fig.005a
(a)
256161.fig.005b
(b)
256161.fig.005c
(c)
256161.fig.005d
(d)
Figure 5: SEM micrographs of CA webs produced from binary mixed solvent systems: acetone : DMAc (2 : 1) at polymer concentrations: ((a)-(b)) 15% (w/v) mean fibre diameter =  nm:, ((c)-(d)): 20% (w/v) mean fibre diameter =  nm.