LAS/AEO-9/乙二醇/水拟三元体系的相行为和流变性能  

Phase behavior and rheological property of LAS/AEO-9/C_2H_6O_2/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表面活性剂山西省重点实验室,山西太原030001

出　　处：《化学试剂》2011年第2期145-148,181,共5页Chemical Reagents

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)/乙二醇/水的拟三元体系的相行为。发现在靠近LAS/乙二醇/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/乙二醇/水一侧的相行为变化比较典型,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。The phase behavior and rheological property of LAS/AEO-9/C2H6O2/H2O were studied by the polarizing microscope and RS75 rheometer.The results showed that only lamellar phase could be observed on the side of the phase diagram of the LAS/C2H6O2/H2O system.With respect to the AEO-9/C2H6O2/H2O system,the phase changes were very typical.With an increasing surfactant concentration,the phase in the solution gradually changed from a micellar solution to a hexangular phase and lamellar phase.The optical textures of lamellar phase and hexangular phase had been observed under polarizing microscope.The results of rheological study were consistent well with the phase behavior of systems investigated.

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]