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Synthesis, Characterization and Application of Lignosulphonate-g-Poly(Sodium Acrylate) Hydrogel


Affiliations
1 Department of Applied Chemistry, Delhi Technological University, Delhi, India
 

Natural polymer-based hydrogels are of great interest to research community owing to their inherent characters of environment friendliness and biodegradability. Current work aims to synthesize lignosulfonate grafted sodium acrylate hydrogel (LS-g-SAH) and investigate its application in urea release behaviour. The hydrogel has been characterized by different techniques. The release kinetics has been analyzed by using a UV-visible spectrophotometer. The optimized composition of lignosulfonate, KPS, and N,N’-MBA has shown the highest water absorbency of 560 g g-1 in distilled water. The equilibrium swollen LS-g-SAH 12 hydrogel has slowly released 60% of loaded urea in 24 h and followed first-order release kinetics. Soil treatment with hydrogel has shown a significant effect in reducing the water evaporation rate. It also improved the seed germination and average height of wheatgrass. The synthesized LS-g-SAH is, thus, expected to have potential application in modern sustainable agriculture.

Keywords

Hydrogel, Lignosulphonate, Release Kinetics, Sustainable Agriculture, Urea Release.
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  • Synthesis, Characterization and Application of Lignosulphonate-g-Poly(Sodium Acrylate) Hydrogel

Abstract Views: 109  |  PDF Views: 49

Authors

Manu
Department of Applied Chemistry, Delhi Technological University, Delhi, India
Rajinder K. Gupta
Department of Applied Chemistry, Delhi Technological University, Delhi, India
Devendra Kumar
Department of Applied Chemistry, Delhi Technological University, Delhi, India

Abstract


Natural polymer-based hydrogels are of great interest to research community owing to their inherent characters of environment friendliness and biodegradability. Current work aims to synthesize lignosulfonate grafted sodium acrylate hydrogel (LS-g-SAH) and investigate its application in urea release behaviour. The hydrogel has been characterized by different techniques. The release kinetics has been analyzed by using a UV-visible spectrophotometer. The optimized composition of lignosulfonate, KPS, and N,N’-MBA has shown the highest water absorbency of 560 g g-1 in distilled water. The equilibrium swollen LS-g-SAH 12 hydrogel has slowly released 60% of loaded urea in 24 h and followed first-order release kinetics. Soil treatment with hydrogel has shown a significant effect in reducing the water evaporation rate. It also improved the seed germination and average height of wheatgrass. The synthesized LS-g-SAH is, thus, expected to have potential application in modern sustainable agriculture.

Keywords


Hydrogel, Lignosulphonate, Release Kinetics, Sustainable Agriculture, Urea Release.

References