The procedure for the preparation of nanoTiO2 impregnated
chitosan/xylan hybrid films (TCF) was prepared. First, 1.5% w/w
chitosan flake was dissolved in a 50 mL of the CH3COOH. Then, 0.1%
w/w xylan and 0.4% w/w of nanoTiO2 powder were added to the
solution and stirred for 8 h with ultrasonic treatment for 15 min at
half hour intervals. Subsequently, another 50 mL of 0.1MCH3COOH
was added. The slurry was stirred continuously for 24 h to obtain
the final transparent viscous solution. After this typical procedure,
the amounts of nanoTiO2 (0.2, 0.4, 0.6, and 0.8% w/w) and chitosan
flake (1, 1.5, 2 and 2.5% w/w) were varied to obtain different
properties of TCF film.