Formulation of Polyacrylic Acid-Layered Double Hydroxide Composite System as a Soil Conditioner for Water Management

Abstract

An efficient strategy of soil-conditioner application was offered by incorporating a high molecular weight organic polymer (polyacrylic acid; PAA) into a soil-friendly inorganic material (layered double hydroxide; LDH). The prepared materials were characterized by different spectroscopic techniques to confirm the formed nanocomposite structure. The SEM images captured the morphological ability of PAA-LDH nanocomposites to absorb and keep water molecules during soil-water application. The IR analysis indicated an electrostatic grafting process between PAA units and LDH moieties. The platform of PAA-LDH nanocomposite formulation stabilized the soil aggregates and improved the water-stability.

The effect of layered double hydroxide on fluoride release and recharge from a commercial and an experimental resin varnish

“…This has previously been reported in the field of soil conditioners for water, where FTIR spectra, taken after the polymerisation process, showed evidence of grafting (crosslinking) between LDH and PAA, resulting in a composite structure. Furthermore, it has been suggested that the dissolution behaviour of the free applicable PAA decreased due to cross-linking [22]. Our results concur with this since ClinproXT + ZnAl-LDH samples showed reduced weight changes in water compared to ClinproXT alone, thus relating to the decreased dissolution behaviour of PAA.…”

M(II)Al4 Type Layered Double Hydroxides—Preparation Using Mechanochemical Route, Structural Characterization and Catalytic Application

“…Layered double hydroxides (LDH) belong to a group of anionic clay-type materials possessing a CdI 2 -type structure. Due to the chemical diversity offered by variability in the composition of the interlamellar galleries and layers, they can be finely tuned to numerous applications, from healthcare [1] to agriculture [2] and the polymer industry [3], just to mention a few. Perhaps the most promising research field of the pristine and heat-treated derivatives of LDHs is their application as catalysts.…”