农药微乳液相行为及微乳结构的研究  

Study of Phase Behavior and Microstructure of Agrochemical Microemulsion

作　　者：张晓光[1] 张高勇[1] 王红霞[1] 周雅文[1] 陈志萍[1] 

机构地区：[1]中国日用化学工业研究院,山西太原030001

出　　处：《精细化工》2003年第8期475-477,512,共4页Fine Chemicals

基　　金：国家自然科学基金资助项目(20073061);山西省留学回国人员基金资助项目(2000104);山西省自然科学基金资助项目(20001020)

摘　　要：首先绘制了LAS/TX—10/正丁醇/仲丁威/水体系的拟三元相图,讨论了m(LAS)/m(LAS+TX—10)及m(正丁醇)/m(LAS+TX—10)对相区的影响。发现m(LAS)/m(LAS+TX—10)越高,液晶区越大;比例越低,乳液区越大。m(正丁醇)/m(LAS+TX—10)越低,液晶区越大;比例越高,液晶区越小。通过电导率的测定研究了微乳结构及结构转变。当m(正丁醇)/m(LAS+TX—10)=1,m(LAS)/m(TX—10)=1/9或6/4时,微乳液转变经历了由W/O到双连续最后到O/W型;m(LAS)/m(TX—10)=9时,微乳液转变经历了由W/O到双连续、液晶最后到O/W型。Phase diagrams of the LAS/TX-10/butanol/fenobucarb syst em were presented. The weight ratios of LAS to (LAS+TX-10) and butanol to (LAS +T X-10) had a significant influence on the phase region.The higher the ratio of LAS to ( LAS +TX-10),the bigger the liquid crystal region;and the lower the rat io,the bigger the emulsion region.The lower the weight ratio of butanol to ( LAS +TX-10),the bigger the liquid crystal region;and the higher the ratio,the smal ler the region.Microstructure was studied by conductivity measurement.When the w eight ratio of butanol to (LAS+TX-10) was 1,and the weight ratio of LAS to TX- 10 were 1/9 or 6/4,the microstructure underwent a continuous change,namely from W/O structure through bicontinuous structure to O/W structure.When the weight r atio of LAS to TX-10 was 9,there was a liquid crystal region after bicontinuous .

关 键 词：表面活性剂 相行为 微乳液 微乳结构 电导率 仲丁威 

分 类 号：O648.23[理学—物理化学]