助表面活性剂对乙草胺微乳液相图的影响

用拟三元相图法研究了醇醚糖苷(AEG)/醇醚羧酸盐(AEC)/醇/乙草胺/水体系的微乳液相行为,讨论了不同碳链长度的醇对乙草胺微乳液拟三元相图的影响,并通过电导率测定,研究了乙草胺微乳液的微观结构转变。结果表明,随着助表面活性剂醇碳链的增长,乙草胺微乳液的微乳区面积逐渐变小,而液晶区从无到有并逐渐增大;以正丁醇为助表面活性剂时,正丁醇的质量分数〔m(正丁醇)/m(AEG+AEC+正丁醇)〕对微乳区面积有一个最佳值。

Effect of Cosurfactant on Phase Behavior in Acetochlor Microemulsion

The phase behavior of the microemulsion for the quaternary system of the alkylethoxyglucoside(AEG)/alkylethercarboxylate(AEC)/alcohol/acetochlor/water has been investigated with the ternary phase diagram.The effects of different alcohols and different alcohol-contents on the acetochlor microemulsion were discussed and the transformation of microstructure of the acetochlor microemulsion was investigated by means of the conductivity measurement.The results show that the area of microemulsion region decrease as the carbon chain of alcohol molecules increases,and the liquid crystal region forms and increases.When the alcohol is n-butanol,its content has an optimal value for the microemulsion region area.