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  • Cellulose-polymer-Ag nanocomposite fibers for antibacterial fabrics/skin scaffolds.

Cellulose-polymer-Ag nanocomposite fibers for antibacterial fabrics/skin scaffolds.

Carbohydrate polymers (2013-03-19)
Gownolla Malegowd Raghavendra, Tippabattini Jayaramudu, Kokkarachedu Varaprasad, Rotimi Sadiku, S Sinha Ray, Konduru Mohana Raju
ABSTRACT

Natural carbohydrates (polysaccharides): gum acacia (GA) and gaur gum (GG) were employed in dilute solutions: 0.3%, 0.5% and 0.7% (w/v), as effective reductants for the green synthesis of silver nanoparticles (AgNPs) from AgNO3. The formed AgNPs were impregnated into cellulose fibers after confirming their formation by utilizing ultraviolet-visible (UV-vis) spectral studies, Fourier transforms infrared (FTIR) and transmission electron microscopy (TEM). The surface morphology of the developed cellulose-silver nanocomposite fibers (CSNCFs) were examined with scanning electron microscope-energy dispersive spectroscopy (SEM-EDS). The thermal stability and mechanical properties of the CSNCFs were found to be better than cellulose fibers alone. The antibacterial activity of the nanocomposites was studied by inhibition zone method against Escherichia coli, which suggested that the developed CSNCFs can function effectively as anti-microbial agents. Hence, the developed CSNCFs can effectively used for tissue scaffolding.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Gum arabic from acacia tree, spray dried
Sigma-Aldrich
Silver nitrate on silica gel, extent of labeling: ~10 wt. % loading, +230 mesh
Sigma-Aldrich
Silver nitrate solution, 2.5 % (w/v) AgNO3 in H2O
Sigma-Aldrich
Gum arabic from acacia tree, branched polysaccharide
Sigma-Aldrich
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Sigma-Aldrich
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Sigma-Aldrich
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Sigma-Aldrich
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Sigma-Aldrich
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Sigma-Aldrich
Silver nitrate, meets analytical specification of Ph. Eur., BP, USP, 99.8-100.5%
Sigma-Aldrich
Silver nitrate, ACS reagent, ≥99.0%
Sigma-Aldrich
Silver nitrate, puriss. p.a., ≥99.5% (AT)
Sigma-Aldrich
Silver nitrate, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.8%