波谱学杂志 ›› 1998, Vol. 15 ›› Issue (2): 103-107.

• 研究论文 •    下一篇

表面活性剂在水溶液中聚集状态的1H NMR研究

姜立红1, 赵濉2, 俞稼镛2, 岳勇1, 杜有如1   

  1. 1 中国科学院武汉物理与数学研究所波谱与原子分子物理国家重点实验武汉 430071;
    2 中国科学院感光化学研究所 北京 100101
  • 收稿日期:1997-10-05 修回日期:1997-10-28 出版日期:1998-04-05 发布日期:2018-01-13
  • 作者简介:姜立红,女,27岁,硕士
  • 基金资助:
    国家攀登(B)计划《复合驱强化采油技术中重大基础性研究》项目资助课题

STUDY OF AGGREGATIONOF SURFACTANTS IN WATER SOLUTION BY 1H NMR

Jiang Lihong1, Zhao Sui2, Yu Jiayong2, Yue Yong1, Du Youru1   

  1. 1 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071;
    2 Institute of Photochemistry, Chinese Academy of Sciences Beijing 100101
  • Received:1997-10-05 Revised:1997-10-28 Online:1998-04-05 Published:2018-01-13

摘要: 表面活性剂在水溶液中的自扩散系数,1H化学位移和自旋晶格弛豫的NMR测量表明,上述参数随表面活性剂浓度而变化,并在某一浓度开始有转折点.这一转折点恰好对应着各自的临界胶团浓度.表面活性剂分子的不同基团的质子化学位移随其浓度变化幅度的不同提供胶团形成的分子水平描述.

关键词: 自扩散系数, 临界胶团浓度, 表面活性剂, 分子构象

Abstract: The self-diffusion coefficient, proton chemical shift and spin-lattice relaxation measurements show that the above mentioned parameters vary with concentration and showturning points which correspond to the cmc of each surfactant. The difference in variation of the chemical shifts of different resonance peaks of the surfactants provides description of the formation of micelles at a molecular level.

Key words: Self-diffusion coefficient, Critical micelle concentration, Surfactant, Molecular conformation