Figure 7.

SEM images of surface and cross section of PIM-1 MMM incorporated with different f-MWCNT loading. 0.5 wt.% (a, b); 2 wt.% (c, d); and 3 wt.% (e, f) (PIM-1 and 1 wt.% f-MWCNT/PIM-1 MMM are shown in Figure 6a, b, e, f).