| SDS-CTAB-H2O-NaBr双水相系统研究 |
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| 引用本文： | 滕弘霓,孟雷,刘南辉,刘洪来. SDS-CTAB-H2O-NaBr双水相系统研究[J]. 华东理工大学学报(自然科学版), 2002, 28(2): 200-203 |
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| 作者姓名： | 滕弘霓 孟雷 刘南辉 刘洪来 |
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| 作者单位： | 1. 华东理工大学化学系,上海,200237
2. 青岛化工学院应用化学系,青岛,266042 |
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| 基金项目： | 国家自然科学基金资助项目(29736170,20025618),教育部高等学校青年骨干教师资助项目 |
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| 摘 要： | 实验测定并绘制了十二烷基硫酸钠（SDS）－十六烷基三甲基溴化胺（CTAB）－水－NaBr系统的双水相区和偏光区，探索了NaBr对系统的影响。结果表明：SDS和CTAB混合表面活性剂的水溶液有两个双水相区和偏光区的位置，盐浓度愈大，双水相区和偏光区愈向相图两侧移动，当NaBr浓度高于0．2mol/L时，双水相区与偏光区发生偏离，部分双水相区上相偏光现象消失。
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| 关 键 词： | 表面活性剂溶液 双水相 液晶 十二烷基酸钠 十六烷基三甲基溴化胺 |
| 文章编号： | 1006-3080(2002)02-0200-04 |
| 修稿时间： | 2001-04-19 |
Phase Behavior of SDS-CTAB-H2O-NaBr System |
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| TENG Hong ni ,MENG Lei ,LIU Nan hui ,LIU Hong lai. Phase Behavior of SDS-CTAB-H2O-NaBr System[J]. Journal of East China University of Science and Technology, 2002, 28(2): 200-203 |
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| Authors: | TENG Hong ni MENG Lei LIU Nan hui LIU Hong lai |
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| Affiliation: | TENG Hong ni 1,MENG Lei 2,LIU Nan hui 1,LIU Hong lai 1* |
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| Abstract: | The aqueous two phase region and polarizing regions of sodium dodecyle sulphate (SDS) cetyl trimethyl ammonium bromide (CTAB) H 2O have been determined on a pseudo ternary phase diagram, and the influence of added salt NaBr on them has been observed. It is shown that there are two ATPSs in the aqueous solution of SDS and CTAB mixture, one of them has the cloud point. The upper phase of ATPS is liquid crystal and the lower phase isotropic solution. The added salt NaBr can change the composition of ATPS regions and the polarizing regions. When the salt concentration increases, the position of ATPS region will move to higher concentration of SDS and CTAB. If the concentration of NaBr is higher than 0.2mol/L, the ATPS regions will partly overlapped the polarizing regions and the polarizing phenomenon in the upper phase of some ATPSs will disappear. |
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| Keywords: | surfactant solution aqueous two phase system liquid crystal sodium dodecyle sulphate cetyl trimethyl ammonium bromide |
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