Potential of superabsorbent hydrogels to improve agriculture under abiotic stresses

The Study of the Swelling Degree of the PVA Hydrogel with varying concentrations of PVA

“…In addition, hydrogels can also be presented in various forms, such as 3D solids, thin films, microparticles, and liquids [5]. Hydrogels have been applied in various fields, such as drug delivery systems [6], agriculture [7], pharmaceuticals [8], diagnostics [9], tissue engineering [10], wound healing [11], biosensors [12], food industry [13], and electronics industry [14].…”

Durability indicatives of hydrogel for agricultural and forestry use in saline conditions

“…The degradation of RAm, at all salinity levels increases with evaluation time confirming that acrylamide is degraded in days (Lande et al, 1979). Up to 95% of the RAm was degraded within 30 days in hydrogels Poly (Acrylamideco-Potassium Acrylate) under temperatures and salinity, indicating negligible environmental persistence (Nascimento et al, 2021). Also, RAm is susceptible to biodegradation in soil and surface water, which reduces the risk of accumulation in the environment (Neely et al, 1974;Tepe and Çebi, 2017).…”

“…The residual acrylamide monomer (RAm) was quantified from the area of its respective chromatographic peak, with elution time of 2.2 min, using a calibration curve obtained by diluting a 10-ppm solution of acrylamide monomers in deionized water. The results were expressed in mg g -1 of hydrogel (Nascimento et al, 2021).…”

Temperature limitations in the use of hydrogels on leptosols in a semi-arid region of Brazil

“…Studies have indicated that increasing temperature compromises the functionality of agricultural hydrogels, highlighting a reduction of up to 60% of the water retention capacity in soil amended with hydrogel at temperatures up to 35 °C (Andry et al, 2009). The absorption of water by hydrogels (Acrylamide-co-Potassium Acrylates) decreased (from 37 to 97%) with increasing temperature from 20 to 65 °C (Nascimento et al, 2021).…”