水溶助长剂在农药微乳剂中的应用研究  

Study of application of hydrotropes in pesticide microemulsions

作　　者：张晓光[1] 董金凤[1] 张高勇[1] 夏立振[1] 

机构地区：[1]武汉大学化学与分子科学学院

出　　处：《日用化学工业》2007年第5期283-286,共4页China Surfactant Detergent & Cosmetics

基　　金："十五"国家科技攻关计划资助项目(2004BA308A25-14)

摘　　要：研究了3种水溶助长剂对TX-100/正丁醇/庚烷/水体系相行为的影响,表明只有尿素扩大了微乳液区的面积。同时还研究了仲丁威对TX-100/正丁醇/庚烷/尿素溶液体系相行为的影响,结果表明,当仲丁威质量分数小于15%时对体系相行为基本无影响;随仲丁威质量分数增加,透明的微乳液区面积逐渐减小,而乳液区面积增加。通过电导法研究了仲丁威质量分数10%时相图中微乳液的结构。当m(TX-100+正丁醇+仲丁威)∶m(庚烷+仲丁威)=9∶1时,微乳液经历了由W/O到双连续再到O/W型结构转变,而当m(TX-100+正丁醇+仲丁威)∶m(庚烷+仲丁威)=6∶4时,未观察到明显的微乳液结构转变。The effects of three hydrotropes on phase behavior of TX - 100/butanol/heptane/water system were studied. The results showed that only urea enlarges microemulsion region area. The influences of pesticide fenobucarb on the phase behavior of TX- 100/butanol/heptane/urea solution were also studied. Results showed that it has no effect on the phase diagram as the mass fraction of fenobucarb is less than 15%. The transparent microemulsion region decreases, and the emulsion region increases gradually with the increase of fenobucarb content. The microemulsion structure was studied by conductivity measurement in 10% fenobucarb phase diagram. As the mass ratio of （TX - 100 ＋ butanol ＋ fenobucarb） to （heptane ＋ fenobucarb） is 9： 1, the microstructure undergos a continuous change, namely from W/O through bicontinuous structure to O/W structure. When the mass ratio of （TX - 100 ＋ butanol ＋ fenobucarb） to （heptane ＋ fenobucarb） is 6：4, no microstructure change is observed.

关 键 词：非离子表面活性剂 水溶助长剂 微乳液 相行为 仲丁威 电导率 

分 类 号：TQ450.4[化学工程—农药化工]