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制备和应用可降解的素/聚合物 (乙烯基酒精) 聚合物作为尿素缓释涂层材料
Yue Liu1,2, Long Cao1,3, Linshan Wang3
1China-Malaysia National Joint Laboratory, Biomedical Research Center, Northwest MinZu University, Lanzhou 730000, China.
Molecules (Basel, Switzerland)
|April 27, 2024
概括
这项研究开发了一种基于素的新型缓释肥料涂层. 新材料有效减少营养损失和环境污染,促进可持续农业.
科学领域:
- 农业科学 农业科学
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
背景情况:
- 水溶性尿素肥料导致大量的营养损失和环境污染.
- 开发高效的缓释化肥对于可持续农业和减少生态影响至关重要.
研究的目的:
- 为植物营养创造一种基于素的新型缓释包膜材料,其中包含和硫.
- 评估这种基于素的涂层的性能和性能,以提高肥料效率.
主要方法:
- 雅克毛基拉水解剂的氨基化和纳入聚乙醇 (PVA) 中,含有不同的氨基化木质素 (AL) 负载 (2-14 wt%).
- 薄膜特性 (结构,热稳定性,机械,物理化学) 的表征.
- 使用高压喷涂涂覆盖尿素颗粒,并评估缓释性能和土壤退化.
主要成果:
- PVA-AL (8%) 配方表现出最佳的吸水能力和机械性能,在45天后,土壤重量减少了51%.
- 涂层尿素颗粒显示出良好的形态和显著降低的释放率 (30天内96.4%),合适的释放模型 (Higuchi,Ritger-Peppas,第二阶段).
- 盆栽实验证实了Brassica napus的持续气供应.
结论:
- 基于素的复合材料,特别是PVA-AL (8%),适用于涂层肥料,创造有效的缓释化肥.
- 这项创新支持可持续的作物生产,通过尽量减少营养损失和环境污染.
- 开发的材料为环保肥料管理提供了一个有希望的替代方案.
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