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The role of presence of wormlike micelles of ionic surfactants on the sterilization efficiency of sodium hypochlorite

  • Rabah Ali Khalil Professor and Chair of Physical Chemistry at University of Mosul Iraq with proven experience in the research industry. Skilled in addition, Colloids, Materials Science, Computational Chemistry, Spectroscopy, Surfactants, Molecular interactions.

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    Fahad Jumaah Hammad Lecturer of Physical Chemistry at College of Applied Science, University of Samarra, Iraq. He obtained his M.Sc. and Ph.D. from University of Mosul in surfactants and colloids under supervision of Prof. Rabah A. Khalil.

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Published/Copyright: October 22, 2024
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Abstract

This paper describes an attempt to increase the sterilising efficacy of sodium hypochlorite (SH) by prolonging its shelf life in gel mode through the presence of wormlike micelles. No effect was observed on the presence of SH on the ratio of highest viscosity peak of 20:80 of 3 % (w/w) sodium dodecylsulfate (SDS) and cetyltrimethylammonium bromide (CTAB). On the other side, the presence of SH has a relatively negative effect on transformation process from spherical (three-dimensional, 3D) micelles to wormlike (one-dimensional, 1D) micelles. The gel state of the aqueous SH solution is maintained even at a ratio of 20:80 SDS:CTAB 3 % (w/w). Measurements of the biological activity of the gel using Staphylococcus aureus bacteria show that the sterilizing efficiency of SH is enhanced by the presence of 1D micelles. In contrast, the stability of SH using the kinetic method shows a sudden decrease in its stability due to the presence of 1D micelles, and the same is the case when both SDS and CTAB micelles are present. It was concluded that the increase in the biological activity of SH due to presence of micelles in gel or liquid mode resulted from their chemical interference, which acts as an antibacterial formulation.


Corresponding author: Rabah Ali Khalil, Department of Chemistry, College of Science, University of Mosul, Mosul, Iraq, E-mail:

About the authors

Rabah Ali Khalil

Rabah Ali Khalil Professor and Chair of Physical Chemistry at University of Mosul Iraq with proven experience in the research industry. Skilled in addition, Colloids, Materials Science, Computational Chemistry, Spectroscopy, Surfactants, Molecular interactions.

Fahad Jumaah Hammad

Fahad Jumaah Hammad Lecturer of Physical Chemistry at College of Applied Science, University of Samarra, Iraq. He obtained his M.Sc. and Ph.D. from University of Mosul in surfactants and colloids under supervision of Prof. Rabah A. Khalil.

  1. Research ethics: Not applicable.

  2. Informed consent: Not applicable.

  3. Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.

  4. Use of Large Language Models, AI and Machine Learning Tools: None declared.

  5. Conflict of interest: The authors state no conflict of interest.

  6. Research funding: None declared.

  7. Data availability: Not applicable.

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Received: 2024-08-07
Accepted: 2024-10-02
Published Online: 2024-10-22
Published in Print: 2024-11-26

© 2024 Walter de Gruyter GmbH, Berlin/Boston

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