LAS/AEO-9/丙三醇/水拟三元体系的相行为和流变性能  

Phase Behavior and Rheology Property of LAS/AEO-9/C_3H_8O_3/H_2O System

作　　者：刘高令[1] 杜志平[1] 王国永[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》2010年第6期542-545,566,共5页Fine Chemicals

基　　金：国家科技部科研院所技术开发专项资金资助项目(NCSTE-2007-JKZX-001);山西省青年科技基金资助项目(2009021012)~~

摘　　要：用偏光显微镜和RS75控制应力流变仪研究了LAS(直链烷基苯磺酸钠)/AEO-9(脂肪醇聚氧乙烯醚)/丙三醇/水的拟三元体系的相行为。发现在靠近LAS/丙三醇/水一侧整个液晶区只出现层状相液晶相,无六角相液晶相;而在靠近AEO-9/丙三醇/水一侧的相行为变化为比较典型,随着表面活性剂浓度增大,由胶束溶液逐渐向六角相液晶和层状相液晶过渡。在偏光显微镜下,观察到了层状相液晶和六角相液晶的偏光织构,并得到流变性能研究结果的印证。Phase behavior and rheology property of LAS/AEO-9/C3H8O3/H2O were investigated with polarizing microscope and RS75 rheometer.The results show that only lamellar phase could be observed on the side of the LAS/C3H8O3/H2O of the phase diagram.On the side of the AEO-9/C3H8O3/H2O,the phase changes of surfactant solution were very typical.With the increase of surfactant concentration,the phase in the solution changed from micelle solution to hexangular phase and lamellar phase gradually.The patterns of lamellar phase and hexangular phase have been observed under polarizing microscope.The results of rheology corresponded to the phase behavior.

关 键 词：表面活性剂 直链烷基苯磺酸钠 脂肪醇聚氧乙烯醚 流变性 

分 类 号：TQ423[化学工程]