Cellulose–polymer–Ag nanocomposite fibers for antibacterial fabrics/skin scaffolds
| Autor: | Tippabattini Jayaramudu, Gownolla Malegowd Raghavendra, Rotimi Sadiku, Kokkarachedu Varaprasad, Konduru Mohana Raju, Suprakas Sinha Ray |
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| Rok vydání: | 2013 |
| Předmět: |
Silver
Materials science Polymers and Plastics Carbohydrates Nanofibers Metal Nanoparticles Biocompatible Materials Microbial Sensitivity Tests Galactans Article Silver nanoparticle Nanocomposites Mannans Gum Arabic chemistry.chemical_compound Microscopy Electron Transmission Gum acacia Tensile Strength Plant Gums Spectroscopy Fourier Transform Infrared Polymer chemistry Escherichia coli Materials Chemistry Thermal stability Particle Size Fourier transform infrared spectroscopy Cellulose Gaur gum Nanocomposite Tissue Scaffolds biology Organic Chemistry biology.organism_classification Anti-Bacterial Agents Cellulose fiber Chemical engineering chemistry Transmission electron microscopy Cellulose fibers Silver Nitrate Antibacterial activity Silver nanoparticles |
| Zdroj: | Carbohydrate Polymers |
| ISSN: | 0144-8617 |
| Popis: | Highlights ► Two different types of AgNPs formed are between 2 and 8 nm in size (by green process). ► Small size polymer AgNPs with cellulose fibers enhanced the inactivation of bacteria. ► Energy conserving process (which were reduced form carbohydrates). ► The green process is a low ingredient ( 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. |
| Databáze: | OpenAIRE |
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