高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (10): 1357.

• 论文 • 上一篇    下一篇

非离子型表面活性剂的微乳液热力学性质(Ⅱ)--醇类的原子数和活性剂的氧乙烯基团的影响

郝策1, 石彩云1, 陈宗淇1, 肖贵世1, 宋聚渭1, 程德书2   

  1. 1. 青岛化工学院应用化学系, 青岛, 266042;
    2. 中国科学院感光化学研究所;
    2.
  • 收稿日期:1990-06-05 出版日期:1991-10-24 发布日期:1991-10-24
  • 通讯作者: 陈宗淇
  • 基金资助:

    国家自然科学基金

Thermodynamic Properties of Microemulsion Composed of Nonionic Surfactants(Ⅱ)--The Effect of Alkyl Chain Length of Alcohol and Oxyethylene Unit of Nonionic Surfactants

Hao Ce1, Shi Cai-yun1, Chen Zong-qi1, Xiao Gui-shi1, Song Jiu-wei1, Cheng De-shu2   

  1. 1. Department of Applied Chemistry, Qindao Institute of Chemical Technology, Qingdao, 266042;
    2. Institute of Photographic Chemistry, Chinese Academy Science, Beijing
  • Received:1990-06-05 Online:1991-10-24 Published:1991-10-24

摘要: 本文研究了由非离子型表面活性剂、水、甲苯和醇所组成的微乳液,发现醇的烃链上碳原子数直接与热力学函数成线性关系,氧乙烯基团数与自由能、焓以及熵的对数值亦成线性关系。这些结果对研究微乳液的构成和稳定性很有意义。

关键词: 微乳液, 热力学性质, 非离子型表面活性剂

Abstract: The Microemulsions composed of nonionic surfactants are a quaternary mixtures consisting of polyphenol oxyethlene ethers, oil (toluene), water and alcohol (hexanol). The systems were studied thermodynamically by means of dilution to determine the standard free energy for alcohol to tranfer from the oil phase to the interfacial region. From the effects of temperature, the entropy and enthalpy were calculated. The effect of chain length of the alcohol is described. It is found that the thermodynamic functions change linearly with the increase of the number of carbons (n) in the alcohol, which can be described as-AGs→△Gs→i0=6860+224n(35℃)△Hs→i0 = 92300-6700n and △Ss→i0 = 321-21n.

Key words: Microemulsion, Thermodynamic property, Nonionic surfactants

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