Preparation and characterization of antibacterial films from bamboo
The aim of this research was to prepare lignocellulose films reinforced with chitosan (CS), nano-ZnO (NZO), or nano-TiO2 (NTD) by casting method. The chemical structures of the films were characterized with FT-IR, which showed no chemical bonds formed but certain interactions among the hydrogen bonds. X-ray diffraction confirmed that the main structure of blend films was unchanged comparing to lignocellulose film. Derivative thermogravimetry (DTG) presented that the residual masses of lignocellulose/chitosan (LCCS) film, lignocellulose/TiO2 (LCTD) film, and lignocellulose/ZnO (LCZO) film were 23.43%, 19.27%, 27.68% at 700°C, respectively. Ultimate tensile strength and strain to break of all blend films were decreased with addition of CS, NZO, and NTD, respectively. LCCS film was more effective against Escherichia coli and Staphylococcus aureus than LCTD film and LCZO film. Potential antimicrobial applications in the orthopedic field and perspectives regarding future studies in this field were also considered.