物理化学学报 >> 1994, Vol. 10 >> Issue (07): 585-590.doi: 10.3866/PKU.WHXB19940703

研究论文 上一篇    下一篇

P507(K)-醇-正庚烷-水四组分微乳液体系的结构参数

沈兴海, 王文清, 王爽, 李改玲, 高宏成   

  1. 北京大学技术物理系,北京 100871
  • 收稿日期:1993-01-05 修回日期:1993-04-02 发布日期:1994-07-15
  • 通讯作者: 王文清

The Structural Parameters of P507(K)-alcohol-heptane-water Microemulsions

Shen Xing-Hai, Wang Wen-Qing, Wang Shuang, Li Gai-Ling, Gao Hong-Cheng   

  1. Department of Technical Physics, Peking University, Beijing 100871
  • Received:1993-01-05 Revised:1993-04-02 Published:1994-07-15
  • Contact: Wang Wen-Qing

摘要:

根据球状模型并结合稀释法求得了P507(K)-醇(正戊醇、正己醇、异戊醇、异己醇)-正庚烷-水四组分微乳液的结构参数:水内核半径R_w、颗粒有效半径R_e、界面层厚度l、颗粒平均聚集数、颗粒总数N_d以及分散相所占总界面面积A_d。结果表明,R_w与ω(水与表面活性剂摩尔数之比)成线性关系。由直线的截距还求得P507(K)极性头的水化层厚度为0.58 nm。

关键词: 微乳液, 稀释法, 球状模型

Abstract:

The structural parameters of microemulstions composed of P507(K)-alcohol(pentanol, hexanol, iso-pentanol,2-ethyl butanol-1) were calculated based on sphere model and dilution method. The structural parameters include irmer water radius R_w, effective radius of particle R_e, length of interface l, average aggergation number n, total number of particles N_d and total interfacial area of dispersed phase A_d. The results show that R_w has linear relationship with ω (the molax ratio of water to surfactant). According to the intercept, the water solvation thickness of the polar head of P507(K) was calculated to be about 0.58 nm. The maximum numbers of water molecules associating with K~+ in pentanol, hexanol, isopentanol and 2-ethyl butanol-1 containing microemulsions were estimated to be about 5.83, 5.31, 4.95 and 4.28, respectively.

Key words: Microemulsion, Dilution method, Sphere model