秸秆纤维素接枝聚（丙烯酸-腐植酸钾）保水缓释肥的制备及性能,Journal of Applied Polymer Science

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秸秆纤维素接枝聚（丙烯酸-腐植酸钾）保水缓释肥的制备及性能
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2023-03-04 , DOI: 10.1002/app.53814
Lanwen Yang ₁ , Guiming Xie _{1,

2,

3} , Hongping Li ₁ , Chenchen Nie ₁ , Jun Zhou ₁ , Hao Liu ₁

Affiliation

为提高秸秆肥料利用率，节约水资源，以玉米秸秆为原料制备玉米秸秆纤维素接枝聚（丙烯酸-腐植酸钾）（CSC-g-P(AA-KHA)）可降解缓释肥料纤维素（CSC）、丙烯酸（AA）和腐植酸钾（KHA）通过水溶液聚合。使用傅立叶变换红外光谱 (FTIR)、扫描电子显微镜 (SEM) 和热重分析 (TGA) 技术表征 CSC- g -P(AA-KHA) 为成功制备提供了证据。制备的产品表现出优异的吸水性（792.89 g·g ^-1和 72.69 g·g ^-1在去离子水和 0.9 wt% NaCl 溶液中，分别）和增强土壤的保水和保水能力。5 个循环后，CSC- g -P(AA-KHA) 在去离子水和 0.9 wt% NaCl 溶液中的吸水率分别为其初始吸水率的 51.71% 和 49.97%。50天后CSC- g -P(AA-KHA)的降解率为32.02%。土柱淋溶试验和盆栽试验证明了CSC- g -P(AA-KHA)的缓释作用和促进植物生长的作用。CSC- g -P(AA-KHA)在农业上表现出良好的应用潜力，有望成为集吸水、保水、缓释于一体的功能性肥料。

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Preparation and properties of stover cellulose grafted poly (acrylic acid-potassium humate) with water-retention and slow-release fertilizer

To improve the utilization of stover and fertilizer and also save water resources, a degradable slow-release fertilizer of corn stover cellulose graft poly (acrylic acid-potassium humate) (CSC-g-P(AA-KHA)) was prepared using corn stover cellulose (CSC), acrylic acid (AA) and potassium humate (KHA) by aqueous solution polymerization. Characterization of CSC-g-P(AA-KHA) with Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA) techniques provided evidence for the successful preparation. The product prepared exhibited excellent water absorbency (792.89 g·g⁻¹ and 72.69 g·g⁻¹ in deionized water and 0.9 wt% NaCl solution, respectively) and enhanced soil's capacity of water holding and water retention. After 5 cycles, the water absorptivities of CSC-g-P(AA-KHA) in deionized water and 0.9 wt% NaCl solution were 51.71% and 49.97% of their initial water absorption, respectively. The degradation rate of CSC-g-P(AA-KHA) was 32.02% after 50 days. Soil column leaching test and pot experiment demonstrated the slow-release effect and plant growth promotion of CSC-g-P(AA-KHA). CSC-g-P(AA-KHA) showed desirable application potential in agriculture and is expected to become a functional fertilizer that integrates water absorbing, water-holding and slow-release properties.

更新日期：2023-03-04

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