Chinese Journal of Magnetic Resonance ›› 2009, Vol. 26 ›› Issue (4): 466-475.

• Articles • Previous Articles     Next Articles

Mixed Micelles of Sodium Dodecyl Sulfate and Triton X-100 in Aqueous Solution Studied by 1H NMR

  

  1. 1.State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Center for Magnetic Resonance (Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences), Wuhan 430071, China; 2.Graduals School of the Chinese Academy Sciences, Beijing 100049, China
  • Received:2009-04-27 Revised:2009-05-13 Online:2009-12-05 Published:2009-12-05
  • Supported by:

    国家重点基础研究发展计划(“973”计划)资助项目(2009CB918600); 国家自然科学基金资助项目(20635040,20975111).

Abstract:

1H chemical shifts of sodium dodecyl sulfate (SDS) and Triton X-100 (TX-100) were measured in their mixed aqueous solutions with different molar ratios. The critical micelle concentrations (cmc*1, cmc*2) of the two surfacents and the critical mixed micelle concentrations (cmc*) at different molar ratios were calculated by simulating the chemical shift data using a two-state exchange model.  The interaction parameters (βM) and the composition of mixed micelles were evaluated. The mixed-micellization processes were discussed on the basis of the results obtained.

Key words: NMR, mixed micelle, critical micelle concentration, interaction parameter, sodium dodecyl sulfate, Triton X-100

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