化学学报 ›› 1997, Vol. 55 ›› Issue (5): 491-497. 上一篇    下一篇

研究论文

DODMAC/n-C10H21OH/10%n-C10H22/H2O体系溶致液晶的2HNMR和SAXS研究

郝京诚;李干佐;汪汉卿;刘维民   

  1. 山东师范大学化学系;山东大学化学系;中国科学院兰州化学物理研究所 固体润滑开稝27491-497
  • 发布日期:1997-05-15

Studies on lyotropic liquid crystal in the system DODMAC/n-C10H21OH/10%n-C10H22/H2O with 2H NMR and SAXS

HAO JINGCHENG;LI GANZUO;WANG HANQING;LIU WEIMIN   

  • Published:1997-05-15

50℃下, 测定了双十八烷基二甲基氯化铵DODMAC/n-C10H21OH/10%n-C10H22/H2O四元体系相图, 确定了液晶区域范围, 用2H NMR方法, 并辅以偏光显微镜照片, 确定了液晶为反相六角状, 用SAXS求出了液晶晶面间距, 确定了晶面间距d1与含水量fw/(1-fw)之间的线性关系, 并求得圆柱形聚集体的直径ds=4.035nm.

关键词: 液晶, 相图, 二维核磁共振, 双十八烷基二甲基氯化铵

The equilibrium phase diagram for the system dioctadecyldimethylammonium chloride (DODMAC)/n-decanol/n-decane/water was determined at 50 ℃. The hyperfine structures of the liquid crystal phase were studied by 2H NMR, X-ray low-angle diffraction, and polarizing microscopy. All results showed that there was a reversed hexagonal liquid crystalline phase. The connection between crystalline face distance (d1) and the content of water [fw/(1-fw)] was obtained and the diameter of the cylindrical assemble was getted to be 4.035nm.

Key words: LIQUID CRYSTAL, PHASE DIAGRAM

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