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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