Preparation and Characterization of Nano-sized Sr1−xAgxTiO3 System as Antimicrobial Nanomaterial Coating for Paper Base Packaging Materials
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Nano-sized Sr1−xAgxTiO3 system was prepared using modified Pechini method (x = 0, 0.02, 0.05 and 0.07). XRD, TEM and DRS are utilized for the prepared sample characterization. The doping impact on the structural and the antimicrobials properties was studied. The undoped SrTiO3 has cubic-like perovskite structure while Ag-doped samples have traces of metallic silver in addition to the cubic-like perovskite structure. Doping of SrTiO3 with silver resulted in red shift of the absorption to the visible light range. Antimicrobial properties were detected for nano-sized undoped and Ag-doped SrTiO3, whereas the parent SrTiO3 has not clear zone. Different concentrations of silver were applied in matrices of polymer to be utilized as active coating materials on paper sheets. Physico-mechanical properties of coated paper, thickness, water absorption, tensile, elongation at break and short span, were investigated. Active nanocomposite coating enhanced the mechanical and short span behaviors. Interested throughout assessment was presented for nanocomposites coating and its uses on packaging materials.
KeywordsSr1−xAgxTiO3 Nanomaterial Antimicrobial coating Packaging materials
The authors thank the National Research Centre of Egypt for the facilities to carry out the present work, especially the Packaging Materials, Inorganic Chemistry and Microbial Chemistry labs.
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