物理化学学报 >> 1994, Vol. 10 >> Issue (05): 456-460.doi: 10.3866/PKU.WHXB19940517

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Triton X-100在乙二醇中的胶体性质

叶锡麟, 李玉书, 胡秀杰   

  1. 中国科学院感光化学研究所,北京 100101
  • 收稿日期:1992-11-28 修回日期:1993-02-25 发布日期:1994-05-15
  • 通讯作者: 叶锡麟

The Aggragation of Triton X-100 in Ethylene Glycol

Ye Xi-Lin, Li Yu-Shu, Hu Xiu-Jie   

  1. Institute of Photographic Chemistry, Academic Sinica, Beijing 100101
  • Received:1992-11-28 Revised:1993-02-25 Published:1994-05-15
  • Contact: Ye Xi-Lin

关键词: 非离子表面活性剂, Triton X-100, 临界胶团浓度, 胶团聚集数, 荧光猝灭

Abstract:

The CMC and the aggregation number of Triton X-100 in mixtures of ethylene glycol and water have been measured by surface tension and static flucorescence decay methods. The discontinuity of the surface tension curve indicates that Triton X-100 forms micelles in ethylene glycol, though its CMC (0.05 mol·L~(-1), 20 ℃) is greater than that in water. From fluorescence decay the aggregation number of Trion X-100 in ethylene glycol is 25 (30 ℃) in comparison with 97 in water. The aggegation number is reduced by adding glycol into an aqueous solution of Trion X-100. These could be interpreted in terms of a more favourable interaction between molecules of glycol and Trion X-100 than between water and Trion X-100.

Key words: Nonionic Surfactant, Triton X-100, Micelles, Aggregation fluorescence decay