Scanning electron microscopy (SEM) was performed for the
selected films, Test 3 and Test 10, for both lower (in contact with
Petri dish) (Fig. 5A) and upper (drying surface) (Fig. 5B) surfaces.
In general, the photomicrographs of the film surfaces in contact
with the Petri dish had a homogeneous and compact structure
for both formulations.