چكيده لاتين
In order to cope with the water shortage crisis and optimize water consumption in the agricultural sector, the use of water-absorbing materials such as hydrogels has been considered as an efficient option. In this study, the superabsorbent hydrogel TG-g-P(AA-co-GEBBA) was synthesized by grafting acrylic acid (AA) onto tragacanth gum (TG) and using the GEBBA monomer, which also acts as a crosslinker. The chemical structure, rheological properties, morphology, and thermal behavior of the resulting hydrogel were investigated using infrared spectroscopy (FTIR), rheometer, scanning electron microscope (SEM), and thermogravimetric analysis (TGA), respectively. By optimizing the synthesis conditions (raw materials, pH, and temperature), this hydrogel showed a high equilibrium adsorption capacity; In such a way that its absorption rate in distilled water, rainwater and 1% NaCl solution was determined to be 1430, 650 and 100 grams of water per gram of hydrogel, respectively. Also, the effect of parameters such as pH, type and concentration of salt, kinetic behavior of absorption, water retention capacity and the possibility of reusing the hydrogel was evaluated. The results of this research show that the synthesized hydrogel has high efficiency in terms of water absorption and retention performance and can be effective in improving the physical properties of the soil. This material has the potential to be used in practical applications in the agricultural sector and can be used in effective management of water resources.
