Thiol-ene Click Chemistry Using Triethylamine Gas as a Promoter to Make Coated Slow-release Fertilizer
The volatilization, leaching and decomposition of chemical fertilizer lead to the low utilization rate of fertilizer, which poses a great challenge to the environment and human health. Slow-release fertilizers, which can retard the release of fertilizer, provide an effective way to solve these probl...
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| Autores principales: | , , , , , , , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
Elsevier
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/582fffc631fd4140bc6a46106c082bf1 |
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| Sumario: | The volatilization, leaching and decomposition of chemical fertilizer lead to the low utilization rate of fertilizer, which poses a great challenge to the environment and human health. Slow-release fertilizers, which can retard the release of fertilizer, provide an effective way to solve these problems. Progress has been made in preparation of coated slow-release fertilizers, however, there are still some challenges, including high cost, complex production process and uncontrollable nutrient release. In this work, we developed a facile method to make a kind of slow-release fertilizer by thiol-ene click chemistry via triethylamine gas as a promoter at room temperature. The crosslinking polymer coating was directly formed on the surface of fertilizer from inexpensive and commercially available monomers. The results show that the nitrogen release longevity for this coated slow-release fertilizer could reach more than 200 days. The nitrogen release rate can be modulated by the crosslinking density of the polymer coating and was also influenced by the temperature and pH. |
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