高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (8): 1261.

• 论文 • 上一篇    下一篇

苯甲醇对CTAB/KBr胶束体系流变性及CTAB分子1HNMR谱影响的研究

张为灿1, 李干佐1, 冀克俭2, 沈强1   

  1. 1. 山东大学教育部胶体与界面化学重点实验室, 济南 250100;
    2. 兵器工业第五三研究所, 济南 250031
  • 收稿日期:1999-07-06 出版日期:2000-08-24 发布日期:2000-08-24
  • 通讯作者: 李干佐(1939年出生),男,教授,博士生导师,从事胶体化学研究.E-mail:coliw@sdu.edu.cn E-mail:coliw@sdu.edu.cn
  • 基金资助:

    国家“九五”攻关项目(批准号:96-121-02);西南石油学院油气地质及开发工程国家重点实验室资助

The Effect of Benzyl Alcohol on the Rheology and1H NMR Spectra of CTAB of CTAB/KBr Micellar System

ZHANG Wei-Can1, LI Gan-Zuo1, JI Ke-Jian2, SHEN Qiang1   

  1. 1. Key Laboratory for Colloidand Interf ace Chemistry of Educational Ministry, Shangdong University, Jinan 250100, China;
    2. Institute 53, Weaponary Co.of China, Jinan 250031, China
  • Received:1999-07-06 Online:2000-08-24 Published:2000-08-24

摘要: 报道了苯甲醇对CTAB/KBr胶束体系粘度的影响,利用1HNMR法研究了苯甲醇在CTAB胶束中的增溶位置.结果表明,在KBr盐溶液中,随着苯甲醇的加入,0.01mol/LCTAB胶束体系的粘度增大至最大值.对CTAB分子的1HNMR分析表明,少量的苯甲醇增溶在棒状胶束的界面,促使胶束体积增大和相互缠结,体系的粘度随之增大;当苯甲醇浓度较高时,将增溶在胶束的栅栏层靠近极性头一侧,胶束发生棒-球转变和解缠,体系的粘度降低.

关键词: 苯甲醇, 流变性, 棒-球胶束转变

Abstract: The influence of benzyl alcohol on the rheology and 1H NMRspectra of CTABof CTAB/KBr micellar system has been investigated. The addition of benzyl alcohol induces the viscosity of 0.01 mol/L CTAB/KBr micellar system to go through a marked maximum. In terms of 1H NMRspectra of CTAB, it is argued that a little amount of alcohol solubilized in the interfacial region of CTAB/KBr micelles will promote these micelles to be longer and overlapping. This process makes the viscosity of the system rise. With increasing alcohol concentration continuously, it will be dissolved in the palisades of micelles and induces the rod-like micelles to be transformed into small sphere ones and disentanglement. Then the viscosity of this micellar system decreases.

Key words: Benzyl alcohol, Rheology, Rod-to-sphere transition of micelle

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