Antibacterial activities of novel nanocomposite biofilms of chitosan/phosphoramide/Ag NPs

Abstract

Novel nanocomposite films of chitosan/phosphoramide/Ag NPs were prepared containing 1–5% of silver nanoparticles. The Ag NPs were synthesized according to the citrate reduction method. The XRD and SEM analysis of Ag NPs, chitosan (CS), phosphoramide (Ph), CS/Ph, CS/Ag NPs films and the nanocomposite films 1–5 containing CS/Ph/1–5% Ag NPs were investigated. The in vitro antibacterial activities were evaluated against four bacteria including two Gram‐positive Staphylococcus aureus (S. aureus), Bacillus cereus (B. cereus) and two Gram‐negative Escherchia coli (E. coli), Pseudomonas aeruginosa (P. aeruginosa) bacteria. Results revealed greater antibacterial effects of the films against Gram‐positive bacteria. Also, nanocomposite films containing higher percent of Ag NPs showed more antibacterial activities. POLYM. COMPOS. 36:454–466, 2015. © 2014 Society of Plastics Engineers

Investigation of physico‐mechanical, thermal, morphological, optical and biodegradation properties of polyvinyl alcohol films reinforced with alkali treated Limonia acidissima shell powder

“…[4] The biodegradable polymers that have been found in packaging applications are cellulose, chitosan, poly lactic acid, polypropylene, and so forth. [5][6][7] Many materials can be mixed or blended with synthetic materials like polymers and additives to improve the resultant product's functional properties. Hence, the selection of the reinforcing materials used in bio composites is crucial.…”

Enhancement of Antioxidant and Hydrophobic Properties of Alginate via Aromatic Derivatization: Preparation, Characterization, and Evaluation

“…Natural polymers are more influential than synthetic polymers because they are renewable, economic, nontoxic, easily accessible, stable, biodegradable, biocompatible, and prone to chemical modification compared to expensive synthetic ones that have shown toxicity and environmental issues [ 6 , 7 , 8 , 9 ]. Polysaccharides are the most abundant natural biopolymers, which have received increased attraction as influential materials in different biomedical fields, potentially due to their special intrinsic features [ 10 , 11 , 12 , 13 , 14 ]. Polysaccharides have different functional groups and show differential physicochemical properties and fundamental biological activities, making them attractive materials in many pharmaceutical areas, like tissue engineering and drug delivery [ 15 , 16 , 17 , 18 ].…”

Hybrid silica aerogel nanocomposite adsorbents designed for Cd(II) removal from aqueous solution

“…The HSA‐Fe 3 O 4 NPs were separated after 24‐hr mechanical stirring by a strong magnet, washed with ethanol, and dried at room temperature (Scheme ). The HSA‐Fe 3 O 4 ‐CS nanocomposite was prepared through casting the polymeric nanocomposite solution (Shariatinia, Nikfar, Gholivand, & Abolghasemi Tarei, ; Shariatinia & Zahraee, ). For this purpose, 20% w/w of HSA‐Fe 3 O 4 NPs was added to an aqueous solution of CS dissolved in 20 w/w% acetic acid in water under ultrasonic irradiation for 10 hr.…”