摘要
绘制了阳离子表面活性剂R12TAB/正丁醇/正癸烷/水体系的拟三元相图,确定了微乳液区、微乳液/液晶共存区及不同液晶区域的范围。用2HNMR和差示扫描量热法(DSC)与液晶纹理相互对照,研究了该体系的液晶结构特点。结果表明:含质量分数为25%～75%正癸烷的各相图内,除了存在着层状、六角状单相液晶区和层状/六角状/立方状共存的混合液晶区域外,还存在着液晶/微乳液共存的区域,且随着正癸烷质量分数的增加,微乳液及液晶区域逐渐缩小。
Pseudo-ternary phase diagram of R_(12)TAB(3-dodecyloxy-2-hydroxypropyl trimethyl ammonium bromide)/n-butanol/n-decane/water system was plotted with the scope of the micro-emulsion region,the microemulsion/liquid crystal co-existing region,and various liquid crystal regions identified.The features of the system were studied by^2HNMR and DSC and the spectra obtained were checked with photographs showing liquid crystal texture of various samples.The results showed that,in the phase diagrams of the systems containing n-decane of (25 %)～(75 %)(mass),besides the single phase lamella and hexagonal liquid crystal region as well as the lamella/hexagonal/cubical co-existing mixed liquid crystal region,there are liquid crystal/microemulsion co-existing regions.As the content(mass %)of n-decane in the system increases,the area of microemulsion and liquid crystal region decreases.
出处
《日用化学工业》
CAS
CSCD
北大核心
2004年第5期273-276,共4页
China Surfactant Detergent & Cosmetics
基金
聊城大学科研基金资助课题(X031018)
关键词
阳离子表面活性剂
烷氧基羟丙基三甲基溴化铵
溶致液晶
微乳液
cationic surfactant
3-dodecyloxy-2-hydroxypropyl trimethyl ammonium bromide
lyotropic liquid crystal
microemulsion
