Strength and Fracture Properties of Sandy Subgrade Soil Treated with Sodium Polystyrene Sulfonate

Huang, Jianxin; Grajales, Javier A.; Akula, Pavan; Little, Dallas N.; Kim, Yong-Rak; Rushing, John F.

doi:10.1061/jmcee7.mteng-16709

Cited by 1 publication

(1 citation statement)

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“…By virtue of these groups, NaPSS exhibits ion exchange properties allowing it to interact with soil particles and humified organic matter, promoting flocculation of colloidal soil particles and subsequent stabilization of aggregates, and finally influencing soil properties and ecosystemic functions. Therefore, the use of NaPSS in soils promises to be an alternative to mitigate soil erosion, improve fertility and promote plant growth [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Nanocomposite Hydrogels Based on Poly(Sodium 4-Styrene Sulfonate) under Very-High Concentration Regimen of Clays (Bentonite and Kaolinite)

Lerma,

Combatt,

Palencia

2024

Gels

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The aim of this work was to synthesize and study the functional properties of polymer-clay nanocomposite (PCNCs) based on poly(sodium 4-styrene sulfonate) (NaPSS) and two types of clay in the dispersed phase: bentonite and kaolinite, in order to advance in the development of new geomimetic materials for agricultural and environmental applications. In this study, the effect of adding high concentrations of clay (10–20 wt. %) on the structural and functional properties of a polymer–clay nanocomposite was evaluated. The characterization by infrared spectroscopy made it possible to show that the PCNCs had a hybrid nature structure through the identification of typical vibration bands of the clay matrix and NaPSS. In addition, scanning electron microscopy allowed us to verify its hybrid composition and an amorphous particle-like morphology. The thermal characterization showed degradation temperatures higher than ~300 °C with Tg values higher than 100 °C and variables depending on the clay contents. In addition, the PCNCs showed a high water-retention capacity (>2900%) and cation exchange capacity (>112 meq/100 g). Finally, the results demonstrated the ability of geomimetic conditioners to mimic the structure and functional properties of soils, suggesting their potential application in improving soil quality for plant growth.

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Section: Introductionmentioning

confidence: 99%