Preparation and properties of cellulose/silver nanoparticle composites within situ-generated silver nanoparticles usingOcimum sanctumleaf extract
| Autor: | A. Varada Rajulu, Nagarajan Rajini, Battu Satyanarayana, V. Sadanand |
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| Rok vydání: | 2016 |
| Předmět: |
Thermogravimetric analysis
Materials science Polymers and Plastics General Chemical Engineering Composite number Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Silver nanoparticle 0104 chemical sciences Analytical Chemistry chemistry.chemical_compound chemistry Transmission electron microscopy Thermal stability Cellulose Composite material Fourier transform infrared spectroscopy 0210 nano-technology |
| Zdroj: | International Journal of Polymer Analysis and Characterization. 21:408-416 |
| ISSN: | 1563-5341 1023-666X |
| Popis: | In the present work, silver nanoparticles were in situ-generated in cellulose matrix using Ocimum sanctum leaf extract as a reducing agent. Regenerated wet cellulose films were first immersed in O. sanctum leaf extract and then it was allowed to diffuse into the films. The leaf extract–diffused wet films were dipped in different concentrated aq.AgNO3 solutions. The leaf extract inside the wet films reduced AgNO3 into nanosilver. The dry composite films were black in color. Some of the nanoparticles were also formed outside the film in the solution. The nanoparticles were viewed by transmission electron microscopy and scanning electronic microscopy techniques. The composite films showed good antibacterial activity. The cellulose, matrix, and the composite films were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, and thermogravimetric analysis techniques. The tensile properties of the composite films were higher than those of the matrix. These biodegradable films can be... |
| Databáze: | OpenAIRE |
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