Abstract
The present work explores the use of a nanocomposite hydrogel made using Gum ghatti (Gg), N,N-dimethylacrylamide (DMA) and N,N- methylene- bis-acrylamide (MBA) as a matrix for controlled release of 2,4-dichlorophenoxy acetic acid (2,4-D). Stable and uniformally distributed silver nanoparticles (Ag NP) were formed by the reduction of AgNO3 using TCS within the gel network. The Gg-g-PDMA and Ag NPs entrapped gel (Gg-g-PDMA-SN) were characterized by FT-IR, XRD, TGA, SEM, EDS and TEM techniques. The presence of Ag NPs is observed to enhance the swelling ability and the release efficiency of the Gg-g-PDMA gels significantly and also showed higher biodegradability. The gels exhibited prolonged release of the 2,4-D indicating good potential to be used as matrix for controlled release applications in agriculture.
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Abbreviations
- 2,4-D:
-
2,4-Dichlorophenoxy acetic acid
- Ag NPs:
-
Silver nanoparticles
- APS:
-
Ammonium peroxodisulphate
- Gg:
-
Gum ghatti
- Gg-g-PDMA:
-
Gum ghatti-graft-poly(N,N-dimethylacrylamide)
- Gg-g-PDMA-SN:
-
Gum ghatti-graft-poly(N,N-dimethylacrylamide)-Ag nanocomposite
- MBA:
-
N,N- methylene- bis-acrylamide
- SR:
-
Swelling ratio
- TCS:
-
Trisodium citrate
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Acknowledgements
The authors thank DST-PURSE and USIC facility Mangalore University, Mangalagangothri, Karnataka for SEM, EDS, TGA and UV-Vis spectral analysis and SAIF, Cochin University of Science and Technology, Kerala for TEM analysis.
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Babaladimath, G., B., V. Silver nanoparticles embedded gum ghatti-graft-poly(N,N-dimethylacrylamide) biodegradable hydrogel: evaluation as matrix for controlled release of 2,4-dichlorophenoxyacetic acid. J Polym Res 24, 155 (2017). https://doi.org/10.1007/s10965-017-1314-4
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DOI: https://doi.org/10.1007/s10965-017-1314-4