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-7(脂肪醇聚氧乙烯醚)/C2H5OH/H2O的拟三元体系的相行为和流变性能,绘制了相图.发现在靠近LAS/C2H5OH/H2O一侧整个液晶区只出现层状相液晶,无六角相液晶;而在靠近AEO-7/C2H5OH/H2O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结构.流变性能研究结果与相行为相一致.
Phase behavior and rheology properties of pseudo ternary system, LAS （linear sodium alkylben- zene sulfonates）/AEO-7 （fatty alcohol polyoxyethylene ether）/C2H5OH/H2O, were investigated with polarizing mi- croscope and RS75 controlled stress rheometer. The results showed that only lamellar phase liquid crystal could be observed on the side of the LAS/C2H6OH/H20 of the phase diagram, there is no hexagonal phase liq- uid crystal. On the side of the AEO-7/C2HsOH/H20, the phase changes of surfactant solution were very typi- cal. With the increase of surfactant concentration, the phase in the solution changed from micelle solution to hexagonal phase and lamellar phase gradually. The polarizing structures of lamellar phase and hexangular phase have been observed under polarizing microscope. The results of rheology properties corresponded to the phase behavior.
出处
《印染助剂》
CAS
北大核心
2012年第8期22-25,共4页
Textile Auxiliaries
关键词
表面活性剂
直链烷基苯磺酸钠
脂肪醇聚氧乙烯醚
相形为
流变性
surfactants
linear sodium alkylbenzene sulfonates
fatty alcohol polyoxyethylene ether
phase behavior
rheological properties
