الفهرس 
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Abstract
ABSTRACT
The bio-composite films based on Hydroxypropyl methylcellulose (HPMC) reinforced with silver nanoparticles (Ag-NPs) and Titanium oxide nanoparticles (TiO2-NPs) were developed. Some mechanical and physical properties. Tensile strength (TS), elongation (E), Young`s elastic modulus (EM) and water vapor permeability (WVP) were determined. Antibacterial properties of these films were also studied. HPMC films reinforced with Ag-NPs and TiO2-NPs had improved mechanical property. The tensile strength values of HPMC film reinforced with Ag NPs and TiO2-NPs and HPMC without nanoparticles were 39.24, 143.87 and 157.92 MPa, respectively. Elongation of the HPMC film was less than the HPMC film reinforced with Ag-NPs and TiO2-NPs, the results were 2, 35 and 42%, respectively. Additionally, Young’s elastic modulus of HPMC film was determined to be 19.62 MPa and the HPMC film reinforced with Ag-NPs and TiO2-NPs were 4.11 and 3.76 MPa, respectively. The values of WVP of HPMC film was higher than the HPMC film reinforced with Ag-NPs and TiO2-NPs, where they were 0.5076×10-3 ,0.4596×10-3 and 0.4504×10-3 (g/msPa), respectively .Nano-composite films demonstrated strong antibacterial activity against tested pathogen bacteria in the contact surface zone. The ant