Poor cementation between soil particles is a fundamental cause of soil erosion and desertification. In recent decades, many polymers have been used to cement soil particles and improve the physical and chemical properties of soils. The contributions of polymers with different structures and functional groups to soil improvement vary considerably. In this study, a mixture comprising polyacrylamide (PAM), sodium polyacrylate (PAAS), hydroxypropyl methylcellulose (HPMC), and polyvinyl alcohol (PVA) was investigated to meet the requirements of soil water retention, erosion resistance, and plant growth . The results showed that the time required for the modified soil to reach drought conditions was extended by 4–7 days. The PAM/HPMC, PAM/PVA and PAM/PAAS experimental groups reduced the erosion rate by 99.57%, 98.3% and 96.38%, respectively, compared to that of the control group. The belowground plant biomass was significantly increased by PAM/HPMC, PAM/PAAS, and PAM/PVA, with increases of 115.92%, 145.23%, and 205.67%, respectively. HPMC contributed more to the soil erosion resistance and water-holding capacity, PAAS improved the soil porosity substantially, and PVA significantly increased the plant biomass. The rigid structures of the polymer chains enhanced the structural stability of the soil, and the hydrophilic functional groups increased the hydrophilicity of the amended soil. This study indicates different polymers that may be used to improve soil properties.
Juanjuan Hou,Zhixue Chen,Weiqiang Wang,Haonian Guo,Meiqi Liu,Tingting Guo,Jinli Wang,Jianglong Mi,Ziqiang Lei
Loess stabilizer technologies offer potential solutions for mitigating soil erosion. However, it faces significant challenges, including scalability, environmental compatibility and multifunctional integration. Therefore, there is an urgent need for novel strategies to mitigate soil erosion problem. In this study, a multifunctional polymer soil stabilizer (MPSS) was synthesized through modified nano-zinc oxide copolymerizing with acrylic acid and as an effective additive to prevent soil erosion. Loess particle size, bulk density, porosity, and microstructural changes during material addition were studied systematically. It was worth noting that addition of 0.50 % MPSS to soil extends the soil anti-scouring duration to 83.0 h with erosion degree decreased from 100 % to 45.00 % (a 55.00 % reduction), representing an increase in anti-erosion time by a factor of 1000. The Unconfined compressive strength (UCS) of loess was increased by a factor of 14, respectively. It exhibited better water retention, plant compatibility and soil structure stability. In summary, we provided a novel and efficient synthetic strategy for polymeric soil stabilizers. The MPSS was expected to be applied to control soil erosion, contributing to soil-water resources, agricultural development and environmental remediation.
危险品化学品经营许可证（带存储）