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Citation: Ye Xi-Lin, Li Yu-Shu, Hu Xiu-Jie. The Aggragation of Triton X-100 in Ethylene Glycol[J]. Acta Physico-Chimica Sinica, ;1994, 10(05): 456-460. doi: 10.3866/PKU.WHXB19940517 shu

The Aggragation of Triton X-100 in Ethylene Glycol

1.
Institute of Photographic Chemistry, Academic Sinica, Beijing 100101

Received Date: 28 November 1992
Available Online: 15 May 1994

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.
- Nonionic Surfactant,
- Triton X-100,
- Micelles,
- Aggregation fluorescence decay
  ,
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