ABSTRACT In this paper, a novel metolachlor microcapsules suspension (CS) was prepared by interfacial polymerization. Metolachlor polyurea microcapsules suspension was successfully prepared by urea instead of polyamines which could reduce the use of organic solvents and production costs. The synthesized microcapsules were characterized by Fourier Transform Infrared Spectrometer, Scanning Electron Microscope, Ultraviolet Spectrometry, Thermogravimetric analyses and particle size analyzer. In conclusion, the diameter of the urea microcapsules were the smallest (11.52 μm) and excellent encapsulation efficiency (81.45%). In addition, Urea microcapsules had compact microstructures and global shapes, which had a good thermal stability and metolachlor could be preserved better in the polyurea microcapsules. These results indicated that the prepared microcapsules by urea had better thermal storage properties and physicochemical property. The microcapsule suspension of metolachlor hasn’t been researched yet. Therefore, it is significant to prepare microcapsule suspension. More importantly, there is no use of organic solvents in the preparation of microcapsules suspension, which avoided the pollution of solvents to the ecological environment. It is hoped that this polyurea material will be applied in the field of pesticide synthesis and polymers.

中文翻译：

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尿素代替多胺对异丙甲草胺聚脲微胶囊表征的影响

摘要 在本文中，通过界面聚合制备了一种新型异丙甲草胺微胶囊悬浮液 (CS)。以尿素代替多胺成功制备了异丙甲草胺聚脲微胶囊悬浮液，减少了有机溶剂的使用，降低了生产成本。通过傅里叶变换红外光谱仪、扫描电子显微镜、紫外光谱仪、热重分析和粒度分析仪对合成的微胶囊进行了表征。综上所述，尿素微胶囊的直径最小（11.52 μm），包封率最高（81.45%）。此外，尿素微胶囊具有致密的微观结构和球形形状，具有良好的热稳定性，异丙甲草胺在聚脲微胶囊中可以更好地保存。这些结果表明尿素制备的微胶囊具有较好的蓄热性能和理化性能。异丙甲草胺微胶囊混悬剂尚未研究。因此，制备微胶囊悬浮液具有重要意义。更重要的是，微胶囊混悬液的制备不使用有机溶剂，避免了溶剂对生态环境的污染。希望这种聚脲材料能够应用于农药合成和聚合物领域。微胶囊混悬液的制备不使用有机溶剂，避免了溶剂对生态环境的污染。希望这种聚脲材料能够应用于农药合成和聚合物领域。微胶囊混悬液的制备不使用有机溶剂，避免了溶剂对生态环境的污染。希望这种聚脲材料能够应用于农药合成和聚合物领域。