Synthesizing a Calcium Lignosulfonate Composite Water Retention Agent and Evaluating Its Regulatory Effect on Water Evaporation and Crack Evolution in Saline–Alkali Soil
In this study, we synthesized a lignin-based superabsorbent hydrogel (LWR) to relieve severe evaporation and structural degradation in inland saline–alkali soils. The LWR was prepared via free-radical graft copolymerization of calcium lignosulfonate (CL) and acrylic acid (AA), with its swelling performance optimized sy...