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化学学报
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化学学报 ›› 2009, Vol. 67 ›› Issue (20): 2309-2314. 上一篇    下一篇

研究论文

十六烷基三甲基溴化铵在N,N-二甲基乙酰胺/长链醇体系中临界胶束浓度和热力学函数的微量量热法研究

朱跃a   张可a   侯婷婷a   刘海莹a    崔茂金a   张洪林*,a   李干佐b   于丽b   

  1. (a曲阜师范大学化学科学学院 曲阜 273165) (b山东大学胶体与界面化学教育部重点实验室 济南 250100)
  • 投稿日期:2008-05-06 修回日期:2009-04-16 发布日期:2009-06-02
  • 通讯作者: 张洪林 E-mail:zhanghl@qfnu.edu.cn
  • 基金资助:

    国家自然科学基金和山东省自然科学基金资助项目;国家级.国家自然科学基金

Studies on the CMC and Thermodynamic Functions of Cetyltrimethyl- ammonium Bromide in the N,N-dimethylacetamide/Long-chain Alcohol Systems using Microcalorimetric Method

Zhu, Yuea    Zhang, Kea    Hou, Tingtinga    Liu, Haiyinga    Cui, Maojina    Zhang, Honglin*,a    Li, Ganzuob    Yu, Lib   

  1. (a College of Chemical Science, Qufu Normal University, Qufu 273165) (b Key Laboratory for Colloid and Interface Chemistry of Ministry of Education, Shandong University, Jinan 250100)
  • Received:2008-05-06 Revised:2009-04-16 Published:2009-06-02

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2051

被引次数

13

用微量量热法研究阳离子表面活性剂十六烷基三甲基溴化铵（CTAB）在非水溶剂N,N-二甲基乙酰胺（DMA）及长链醇（庚醇，辛醇，壬醇，癸醇）存在下的临界胶束浓度（CMC）以及热力学函数ΔHθm , ΔGθm , ΔSθm，并讨论了温度，醇中碳原子数，醇的浓度与CMC和热力学性质之间的关系。

关键词: 十六烷基三甲基溴化铵, N,N-二甲基乙酰胺, 长链醇(庚醇, 辛醇, 壬醇, 癸醇), 临界胶束浓度, 热力学函数, 微量量热法

The power~time curves of the micelle formation process were determined by microcalorimetry for cetyltrimethylammonium bromide in N,N-dimehylacetamide containing cosurfactant ( heptanol, octanol, nonanol and decanol). The critical micelle concentration ( CMC) and ΔHθm were measured, and ΔGθm and ΔSθm were calculated. The relationship between the temperature, the carbon number of the alcohol, the alcohol concentration and the thermodynamic properties (CMC, ΔHθm , ΔGθm and ΔSθm ) were discussed.

Key words: cetyltrimethylammonium bromide, N,N-dimethylacetamide, long-chain alcohol (heptanol, octanol, nonanol and decanol), critical micelle concentration, thermodynamic function microcalorimetric meth