引用本文:
陈福良, 王仪, 郑斐能, 梁文平. 微乳剂低温稳定性的研究[J]. 物理化学学报,
2002, 18(07): 661-664.
doi:
10.3866/PKU.WHXB20020720
Citation: Chen Fu-Liang, Wang Yi, Zheng Fei-Neng, Liang Wen-Ping. Stability of Agrochemical Microemulsions at Low Temperature[J]. Acta Physico-Chimica Sinica, 2002, 18(07): 661-664. doi: 10.3866/PKU.WHXB20020720
Citation: Chen Fu-Liang, Wang Yi, Zheng Fei-Neng, Liang Wen-Ping. Stability of Agrochemical Microemulsions at Low Temperature[J]. Acta Physico-Chimica Sinica, 2002, 18(07): 661-664. doi: 10.3866/PKU.WHXB20020720
微乳剂低温稳定性的研究
摘要:
微乳剂低温稳定性是微乳剂制剂质量技术指标之一.其影响因素主要为有机溶剂、表面活性剂、助溶剂和水质.以本文配制的几种农药微乳剂：2.5％吡虫啉、5％烯唑醇和10％哒螨灵微乳剂为研究对象，提出了微乳剂制剂存在有机溶剂中有效成分的稳定溶解突变点和添加表面活性剂应保持亲水性与亲油性平衡的观点.
English
Stability of Agrochemical Microemulsions at Low Temperature
Abstract:
The stability of microemulsion at low temperature is one of the technical indices of microemulsion quality. The major factors affect the stability at low temperature are organic solvents, surfactants, cosolvent and water quality. In this paper, three formulated microemulsions were studied,namely, 2.5％ imidacloprid ME, 5％ diniconazole ME and 10％ pyridaben ME. It was found that there is at least one break point or organic solvent concentration above which a pesticide could be solved stably in the organic solvent and the stability of the system could be prolonged at low temperature. However, one should keep in mind that minimum use of organic solvent will benefit the environmental protection. The concentration and the balance of the hydrophilicity and lipophilicity of the added surfactants in the system play a key role on the stability of agrochemical microemulsions.
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