Drought conditions after sowing threaten the seedling establishment of all seeds, including cover crops. Cover crops are commonly broadcast and, thus, often susceptible to drought stress sowing. Our hypothesis was that seed coating with superabsorbent polymers (SAPs) would enhance germination in lab and stand field by increasing water availability single seeds. Red clover (Trifolium pratense L....

The wicking of liquid into a paper-like swelling porous medium made from cellulose and superabsorbent fibers was modeled using Darcy’s law. The work is built on a previous study in which the Washburn equation, modified to account for swelling, was used to predict wicking in a composite of cellulose and superabsorbent fibers. In a new wicking model proposed here, Darcy’s law for flow in porous m...

A novel thermo-sensitive superabsorbent hydrogel with saltand pH-responsiveness properties was obtained by grafting of mixtures of acrylic acid (AA) and N-isopropylacrylamide (NIPAM) monomers onto kappa-carrageenan, kC, using ammonium persulfate (APS) as a free radical initiator in the presence of methylene bisacrylamide (MBA) as a crosslinker. Infrared spectroscopy was carried out to confirm t...

two field and laboratory experiments were conducted to investigate the effects of superabsorbent polymer (sap) and irrigation management on seed and essential oil yields of cumin, as well as the impact of water quality on water holding capacity of sap. salinity had a negative effect on the amount of water absorbed by sap (335 and 59 g h2o per g sap, for distilled water and solution of 0.5% nacl...

This work proposes a novel approach for colorimetric assays using ubiquitous and inexpensive water beads (WBs) made of superabsorbent polymer (sodium polyacrylate). The high-water absorption capacity by the WBs was exploited preconcentration iron ions from samples tap, well, lake waters. Moreover, also worked as substrate detection classical reaction formation Fe(II)-phenanthroline complex. Dig...

Abstract Smart hydrogels, or stimuli-responsive can and should play an important role as excellent drug carriers. These three-dimensional structure materials are composed of crosslinked hydrophilic polymer chains that able to dramatically change their volume other properties in response environmental stimuli, such pH, temperature solvent changes. The main goal individual research projects was t...

Two field and laboratory experiments were conducted to investigate the effects of superabsorbent polymer (SAP) and irrigation management on seed and essential oil yields of Cumin, as well as the impact of water quality on water holding capacity of SAP. Salinity had a negative effect on the amount of water absorbed by SAP (335 and 59 g H2O per g SAP, for distilled water and solution of 0.5% NaCl...