高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (11): 1795.

• 研究论文 • 上一篇    下一篇

N,N-二甲基正十二烷基胺/无机含氧酸体系的相态结构研究

印志磊1, 杨永会1, 邵华1, 宋新宇1, 孙思修1, 杨天林2   

  1. 1. 山东大学化学系, 济南 250100;
    2. 宁夏大学化学系, 银川 750021
  • 收稿日期:2000-12-04 出版日期:2001-11-24 发布日期:2001-11-24
  • 通讯作者: 孙思修(1945年出生),男,教授,博士生导师,从事溶剂萃取与无机材料化学研究.E-mail:ssx@sdu.edu.cn E-mail:ssx@sdu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:20171029)资助

Studies on Phase Structures of N,N-Dimethyl-n-dodecyl Amine/Inorganic Oxyacid System

YIN Zhi-Lei1, YANG Yong-Hui1, SHAO Hua1, SONG Xin-Yu1, SUN Si-Xiu1, YANG Tian-Lin2   

  1. 1. Department of Chemistry, Shandong University, Jinan 250100, China;
    2. Department of Chemistry, Ningxia University, Yinchuan 750021, China
  • Received:2000-12-04 Online:2001-11-24 Published:2001-11-24

摘要: 利用拟三元相图法研究了N,N-二甲基正十二烷基胺(DMDA)多元体系的相态结构,并用电导、偏光显微镜以及红外、紫外可见光谱等手段进行了表征.发现N,N-二甲基正十二烷基胺体系随水相含量的增加,铵盐发生不同形式的有序缔合,分别形成了W/O型微乳液、“节-结”型链状缔合体、层状液晶和O/W型微乳液;在层状液晶中,SO42-主要以桥式双齿配位形式存在,中性胺分子有利于体系中液晶的形成;层状液晶于500nm波长处有一吸收峰,在430nm附近发生“光短路”现象,该现象可能对测定层状液晶的层间距有重要意义.

关键词: 胺, 液晶, 有序缔合, 拟三元相图

Abstract: The phase structures of N,Ndimethyl n-dodecyl amine/inorganic acid systems have been investigated by the methods of the pseudo ternary phase diagrams, conductance, polarizing microscope, UV Vis spectra and FTIRspectra. The results can be expressed as follows: (1) With the increase of water phase content, the amine salt aggregated orderly in-different forms such as W/Omicro emulsion, nodus knot catenulate aggregates, layer liquid crystal and O/Wmicro emulsion. (2) In layer liquid crystal, SO42- mainly combined with amine salt cation by two oxygen atoms in bridge. (3) In UV Vis spectrum of layer L.C., there is an absorption about 500 nm and light short circuit" appeared at about 430 nm. These phenomena may be very important for measuring the distance between the layers of the L.C..

Key words: Alkyl amine, Liquid crystal, Aggregation, Pseudo ternary phase diagram

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