拟三元相图在农药水乳剂配方筛选中的应用研究

Studies on the Application of the Pseudo-ternary Phase Diagram in Screening Pesticide Emulsion in Water

以阿维菌素为例,通过拟三元相图系统研究了非离子与阴离子表面活性剂及其不同复配比例、油相中有效成分不同含量及不同水质下阿维菌素溶液/表面活性剂/水体系的相行为。研究结果表明,非离子表面活性剂与阴离子表面活性剂混用时水乳区面积比单用时面积要小,且随着非离子表面活性剂与阴离子表面活性剂比例的增加,水乳区的面积先减小后增大。而随着油相中阿维菌素的含量及水硬度的增加,水乳区面积有所增加,但影响不大。

The phase behavior of nonionic and anionic surfactants along with different combinations of both and the contents of active ingredient in oil and different water hardness were investigated using pseudo-ternary phase diagram with abamectin as the pesticide. Combinations of anionic and nonionic surfactant produced smaller phase diagram EW regions than did anionic or nonionic surfactant used alone. The area of EW was affected slightly by the content of abamectin in oil phase and water hardness.