Synthesis and swelling properties of pH-sensitive semi-IPN superabsorbent hydrogels based on sodium alginate-g-poly(sodium acrylate) and polyvinylpyrrolidone

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Superabsorbent polymers in agriculture and other applications: a review (2019, background): “The hydrogels have a characteristic to respond to a wide range of external stimuli including pH([12]), temperature([13]), enzymes([14]), solvent compositions([15]), light([16,17]) and electric fluids.”
Superabsorbent hydrogels based on polysaccharides for application in agriculture as soil conditioner and nutrient carrier: A review (2015, methodology): “Equivalent approaches have been used to modify kappa-carrageenan [9], carboxymethyl cellulose [70], sodium alginate [71], xanthan gum [72], carboxymethyl chitosan [73], chitosan [46] and so forth.”
Porous lignin based poly (acrylic acid)/organo-montmorillonite nanocomposites: Swelling behaviors and rapid removal of Pb (II) ions (2017, neutral): “We (g) is the absorption capacity of samples on the equilibrium adsorption [50].”
Design and applications of interpenetrating polymer network hydrogels. A review (2014, background): “Synthesis of IPN composite hydrogels based on SA and other synthetic polymers like PAAm [98], PEG [99], PVA [100], and PVP [101] and their swelling properties and applications for controlled release of bioactive agents were also recently reported.”