用于农业应用的生物活性前体逐渐释放的功能性聚合物的制造
Oscar G Marambio1, Rudy Martin-Trasancos2, Julio Sánchez3
1Departamento de Química, Facultad de Ciencias Naturales, Matemáticas y Medio Ambiente, Universidad Tecnológica Metropolitana (UTEM), J. P. Alessandri 1242, Santiago 7800002, Chile.
Gels (Basel, Switzerland)
|February 25, 2025
概括
开发了新的生物降解聚合物系统,用于农业中控制除草剂的释放. 这些系统在8天内在pH10下释放超过90%,提供高效和可持续的农业解决方案.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 农业科学 农业科学
背景情况:
- 可生物降解的聚合物和水凝对于各种行业的控制释放至关重要.
- 有效的配方在很大程度上依赖于选择适当的聚合物支物,以便逐渐释放生物活性剂.
- 响应刺激的水凝可以根据环境提示提供可调节的释放配置文件.
研究的目的:
- 合成,描述和评估两个新型的受控释放聚合物系统.
- 为了研究一种除草剂植物药剂的pH依赖释放.
- 探索这些系统在农业应用中的潜力,重点是土壤和水资源管理.
主要方法:
- 通过使用氧化 (BPO) 启动器在四水富兰 (THF) 中自由基聚合的共聚合物合成.
- 在没有交叉连接剂的情况下将除草剂植入聚合物链上.
- 通过使用超过 (UF) 系统,对不同pH值进行除草剂释放研究.
主要成果:
- 两种开发系统的pH值为10,在8天内实现了90%以上的除草剂释放.
- 除草剂释放在各种pH值的水溶液中遵循第一阶动力学.
- 与pH 3相比,在pH 7和10观察到更高的动力常数,表明pH响应的释放.
结论:
- 合成的水凝作为有效的聚合物,在农业环境中持续释放除草剂.
- 这些系统显示出提高土壤质量和优化农业用水利用的潜力.
- 聚合物的pH响应性允许根据环境条件量身定制的除草剂输送.
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