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Position: Home > Articles > Function of Anionic/Nonionic Complex Surfactant in Forming Pesticide Microemulsion Agrochemicals 2008,47 (2) 100-102

农药微乳液中阴/非离子复合表面活性剂作用机理

作  者:
李丽芳;王开运;宋东升;孙绪兵;王凤芝
单  位:
山东华阳农药化工集团股份有限公司;山东农业大学植物保护学院
关键词:
毒死蜱;微乳液;拟三元相图;电导率;表面张力
摘  要:
对阴/非离子复合表面活性剂十二烷基苯磺酸钙+苯乙基酚聚氧乙烯聚丙烯醚/毒死蜱溶液/水体系相行为、电导率的研究结果表明,复合表面活性剂体系较两单纯表面活性剂乳化效果增加;在阴/非离子表面活性剂质量比为6∶4时,体系可被水无限稀释,结构出现W/O型、液晶相、双连续型到O/W型结构的变化;随十二烷基苯磺酸钙含量的增加,复合表面活性剂体系的γcmc较纯苯乙基酚聚氧乙烯聚丙烯醚体系的γcmc明显下降。
译  名:
Function of Anionic/Nonionic Complex Surfactant in Forming Pesticide Microemulsion
作  者:
LI Li-fang1,2a, WANG Kai-yun2b, SONG Dong-sheng1, SUN Xu-bing1, WANG Feng-zhi1 (1.Shandong Huayang Pesticide Chemical Industry Group Co., Ltd., Taian 271411, Shandong, China; 2.Shandong Agriculture University a.College of Chemistry and Material Science; b.College of Plant Protection, Taian 271018, Shandong, China)
关键词:
chlorpyrifos; microemulsion; pseudo-ternary phase diagram; electrical conductivity; surface tension
摘  要:
Pseudo-ternary phase diagram and electrical conductivity of complex surfactant(calcium dodecylbenzene sulfonate + ethoxylated tristyrylphenol)/chlorpyrifos solution/water system was investigated. It was found that emulsifying effect was increased comparing complex surfactant with calcium dodecylbenzene sulfonate and ethoxylated tristyrylphenol, respectively. The system could be infinite diluted by water at their optimum ratio, and the micro-structure was varitied from W/O to liquid crystal, bicontinuous structure and O/W. Compared to the pure ethoxylated tristyrylphenol, the γcmc was decreased distinctly with improving content of calcium dodecylbenzene sulfonate in the complex surfactant.

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