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化学学报
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化学学报 ›› 2010, Vol. 68 ›› Issue (23): 2381-2388. 上一篇    下一篇

研究论文

丁二酸二异辛酯磺酸钠在长链醇/N,N-二甲基甲酰胺体系中临界胶束浓度和热力学函数的微量量热法研究

毕红艳1，李晶1，孔长青1，杨淑娟1，孙艳芝1，张洪林*,1，李干佐2，于丽2   

  1. (1曲阜师范大学化学与化工学院 曲阜 273165)
    (2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:2010-05-10 修回日期:2010-07-01 发布日期:2010-07-06
  • 通讯作者: 张洪林 E-mail:zhanghl@qfnu.edu.cn
  • 基金资助:

    宽光谱、高迁移率的有机太阳能电池敏化染料;山东省自然科学基金

Studies on the Critical Micelle Concentration and the Thermodynamic Function of AOT in Long-chain Alcohol/DMF Systems Using Microcalorimetric Method

Bi Hongyan1 Li Jing1 Kong Changqing1 Yang Shujuan1 Sun Yanzhi1 Zhang Honglin*,1 Li Ganzuo 2 Yu Li 2   

  1. (1 School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165)
    (2 Key Laboratory for Colloid and Interface Chemistry of Ministry of Education, Shandong University, Jinan 250100)
  • Received:2010-05-10 Revised:2010-07-01 Published:2010-07-06

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用微量量热法研究了丁二酸二异辛酯磺酸钠(AOT)在N,N-二甲基甲酰胺(DMF)/长链醇(正戊醇、正己醇、正庚醇、正辛醇)体系中的临界胶束浓度(CMC)和热力学函数( , 和 ). 并分析讨论了醇的浓度、醇中的碳原子数及温度与CMC及热力学参数之间的关系. 结果表明, 在AOT/长链醇/DMF体系中, 当醇中的碳原子数相同且醇的浓度相同时, CMC, , 随温度的升高而增大, 而 随温度的升高而降低|当温度相同且醇中的碳原子数相同时, CMC, , 和 随醇浓度的增加都降低|而当温度相同且醇的浓度相同时, CMC, , 和 随醇中碳原子数的增加都降低.

关键词: 丁二酸二异辛酯磺酸钠, N,N-二甲基甲酰胺, 长链醇, 微量量热法, 临界胶束浓度, 热力学函数

The critical micelle concentration (CMC) and thermodynamic function ( , and ) of dioctyl sulfosuccinate sodium salt (AOT) in the N,N-dimethylformamide (DMF)/long-chain alcohol (n-pentanol, n-hexanol, n-heptanol, n-octanol) systems were studied using microcalorimetric method. And the relationships between alcohols concentrations, carbon number, temperature and CMC, thermodynamic properties were discussed. It can be concluded as follows: under the condition of the identical alcohols carbon number and identical concentration of alcohols, the values of CMC, and increase, while the values of decrease with the increment of the temperature. And under the identical condition of temperature and alcohol s carbon number, all the values of CMC, , and decrease with the increment of the alcohols concentrations. And when the temperature and alcohols concentrations are the same, respectively, all the values of CMC, , and decrease with the increment of the alcohols carbon number.

Key words: dioctyl sulfosuccinate sodium salt, N,N-dimethylformamide, long-chain alcohol, microcalorimetric method, critical micelle concentration, thermodynamic function

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