The binding mechanism of methyl orange with the triacetylcellulose
membrane was illustrated in Fig. 5.
To study the surface properties of the prepared membrane,
coated and uncoated triacetylcellulose films, were subjected to
scanning electron microscopy (SEM) analysis. As can be observed
from Fig. 6 surface of film, after immobilization of methyl orange,
has been changed. Cross section SEM of membrane was shown the
thickness of coated indicator on triacetylcellulose film was between
70–100 nm.