Superabsorbent hydrogel based on sulfonated-starch for improving water and saline absorbency

Fabrication of detonation nanodiamond@sodium alginate hydrogel beads and their performance in sunlight-triggered water release

“…Water adsorption is one of the biggest advantages of a hydrogel, i.e., the application of a composite hydrogel depends largely on its water-adsorbing capacity. 55,56 As can be seen from Fig. 4a, in the earlier swelling stage, the water adsorption of the hydrogel beads increased rapidly.…”

Stimuli-Free and Biocompatible Hydrogel via Hydrazone Chemistry: Synthesis, Characterization, and Bioassessment

“…Typically, such systems allow easy distribution of cells or drugs into the liquid precursors before the gelation point, in order to gel afterwards into different shapes which can fit into any defect sides . Numerous approaches have been reported to meet these requirements using different polysaccharides and their derivatives such as chitosan, starch, cellulose, alginate, hyaluronic acid, etc.…”

“…Recently many researches in the literature detail different chemical reactions to obtain stimuli‐free hydrogel at which the gelation process takes place in mild conditions . Physical crosslinking is one of these; it forms gels via ionic bonds, metal‐ion binding, hydrogen bonding and hydrophobic interactions, etc …”

Functional starch-based hydrogels: renewable material solutions for wastewater and agriculture industries

“…Usually, a combination of chemical and physical modification techniques is required to prepare starch-based materials with improved functional properties (Koh et al, 2018). For example, to prepare starchcopolymers with high swelling capacity, gelatinisation of native starch is required to render the polymeric components of starch accessible prior to graft copolymerisation with unsaturated vinylic compounds (Alharbi et al, 2018;El-Hamshary & Assubaie, 2011;Lanthong et al, 2006;Zain et al, 2018). These copolymers are commonly prepared by following a stepwise synthesis method through conventional batch processing.…”

“…These copolymers are commonly prepared by following a stepwise synthesis method through conventional batch processing. A common approach for adjusting the swelling capacity of these starch-copolymers is the application of functional comonomers to introduce hydrophilic side-chains with ionisable pendant groups to the starch backbone (Meng & Ye, 2017;Zain et al, 2018). For example, functional starch copolymers based on acrylamide monomer (AAm), and its anionic derivatives such as 2-acrylamido-2-methylpropane sulfonic acid (AMPS) show great potential for application in treating industrial wastewaters (Farag et al, 2018;Haroon et al, 2019;Song et al, 2007).…”