تهيه هيدروژل بر پايه پلي ساكاريد طبيعي تراگاكانت و بررسي كاربردهاي آن

Preparation of hydrogel based on natural polysaccharide tragacanth an‎d investigation of its applications

شيمي آلي و پليمر

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.

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