Pore size and distribution
Pore diameters decreased with increasing sample thickness
and more small pores were formed (Figures 5
and 6). Increased fiber stacking with increasing thickness
reduced the pore size. The thicker samples, with
more crossover points between fibers, showed less variation
of pore size under elongation. The stretched and
fixed nanowebs increased by 1.5–2 times when
compared with the original nanowebs. It was observed
that the pore size of the recovered nanowebs increased
slightly compared to the original nanowebs because the
shapes of nanowebs were not completely recovered to
the original shape.