Journal
INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION
Volume 21, Issue 5, Pages 408-416Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/1023666X.2016.1161100
Keywords
Antibacterial activity; biodegradable composites; in situ generation; Ocimum sanctum leaves; silver nanoparticles; tensile properties; thermal stability
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Funding
- University Grants Commission of India
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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 used for packaging and medical purposes.
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