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Micellization of sodium dodecyl sulfate and polyoxyethylene dodecyl ethers in solution

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Abstract

The effect of polyoxyethylene type nonionic surfactants (C12E n n = 3, 4, 5, 6, 7 and 8) on the aqueous solution of sodium dodecyl sulfate (SDS) in absence and presence of NaCl was examined using small-angle neutron scattering (SANS), dynamic light scattering (DLS), and viscosity measurements. Upon addition of C12E n , micellar size of SDS was found to increase significantly, and such micellar elongation was further enhanced in the presence of NaCl. Micellar growth is most significant in presence of shorter moieties of C12E n (e.g., n = 3, 4) as compared to higher ethereal oxygen content. The results of structural investigations with SANS and DLS to confirm this assumption are reported. The cloud point of C12E n has increased upon addition of SDS and decrease with NaCl, and a typical behavior is observed when both SDS and NaCl were present.

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Acknowledgment

Financial assistance from CSIR project no. 01(2068)/06/EMR-II is gratefully acknowledged.

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Authors and Affiliations

  1. Department of Chemistry, Veer Narmad South Gujarat University, Surat, 395007, India

    Tejas Patel & Pratap Bahadur

  2. UGC-DAE Consortium for Scientific Research, Bhabha Atomic Research Centre, Trombay, Mumbai, 400 085, India

    Goutam Ghosh

  3. Solid State Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India

    Vinod Aswal

Authors
  1. Tejas Patel
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  2. Goutam Ghosh
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  3. Vinod Aswal
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  4. Pratap Bahadur
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Correspondence to Tejas Patel.

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Patel, T., Ghosh, G., Aswal, V. et al. Micellization of sodium dodecyl sulfate and polyoxyethylene dodecyl ethers in solution. Colloid Polym Sci 287, 1175–1181 (2009). https://doi.org/10.1007/s00396-009-2079-z

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  • DOI: https://doi.org/10.1007/s00396-009-2079-z

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