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化学学报
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化学学报 ›› 2011, Vol. 69 ›› Issue (19): 2253-2258. 上一篇    下一篇

研究论文

水/Triton X-100/正丁醇/环己烷反相微乳液体系中水结构的FT-IR研究

彭旭红1，方建1，王宏奎1，赵继华*,1，沈伟国1,2   

  1. (1兰州大学化学化工学院 兰州 730000)
    (2华东理工大学化学学院 上海 200237)
  • 投稿日期:2010-06-13 修回日期:2011-04-12 发布日期:2011-06-01
  • 通讯作者: 赵继华 E-mail:zhaojihua@lzu.edu.cn;zhaojh@eyou.com
  • 基金资助:

    自然科学基金;上海市科委纳米技术专项基金

Study on the Microstructural Characteristics of Water in Water/Triton X-100/n-Butanol/Cyclohexane Microemulsion by FT-IR Spectroscopy

Peng Xuhong1 Fang Jian1 Wang Hongkui1 Zhao Jihua*,1 Shen Weiguo1,2   

  1. (1Department of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000)
    (2Department of Chemistry, East China University of Science and Technology, Shanghai 200237)
  • Received:2010-06-13 Revised:2011-04-12 Published:2011-06-01
  • Supported by:

    Natural Science Foundation

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1284

被引次数

3

用FT-IR法研究了水/辛烷基苯酚聚氧乙烯醚(Triton X-100)/正丁醇/环己烷组成的反相微乳液体系水池中存在的束缚、结合和自由3种不同的水的状态. 分别考察了水与表面活性剂物质的量之比(Rw)、水油比f (水与环己烷的质量比)、助剂正丁醇的含量对3种状态水含量的影响. 发现在f＝2.8、m正丁醇/mTriton X-100＝0.5、Rw＝8时反相微乳液中出现自由水, 形成水池|然后每个表面活性剂分子所含的结合水的数目稳定在2, 束缚水和自由水的数目随Rw增加而增加|当Rw＝20、m正丁醇/mTriton X-100＝0.5时, f从1增加到6.7的范围内, 环己烷的多少对反相微乳液体系的红外光谱基本上没有影响|正丁醇与Triton X-100分子的烷基链、水分别发生作用, 制约了自由水的出现.

关键词: 反相微乳液, 红外光谱, 水的状态, Triton X-100, 正丁醇

The states of water in water/Triton X-100/n-butanol/cyclohexane reverse microemulsion, trapped water, bound water and free water, have been studied at various molar ratio of water to Triton X-100, mass ratio of water to oil (f) and the content of n-butanol by means of Fourier transform infrared spectroscopy (FT-IR). It was found that the water pools formed after Rw being larger than 8 as f was 2.8 and mn-butanol/mTriton X-100 was 0.5|and the number of free water, the trapped water of per Triton X-100 molecule increased with Rw, while the number of the bounded water was almost constant at 2|the mass ratio of water to oil (1～6.7) had little effect on the FT-IR spectroscopy of the reverse microemulsion at Rw of 20 and mn-butanol/mTriton X-100 of 0.5. In addition, the n-butanol molecules interacted with both molecules of Triton X-100 and water, and it retarded the formation of free water.

Key words: reverse microemulsion, FT-IR, water state, Triton X-100, n-butanol