Micellization behavior of mixed surfactants in pure water and methanol-water mixed solvent media by density methods

Authors

  • Ajaya Bhattarai Department of Chemistry, M.M.A.M.C., Tribhuvan University, Biratnagar
  • Kavita Pathak Department of Chemistry, M.M.A.M.C., Tribhuvan University, Biratnagar
  • Bikash Dev Department of Chemistry, M.M.A.M.C., Tribhuvan University, Biratnagar

DOI:

https://doi.org/10.3126/bibechana.v13i0.13887

Keywords:

Mixed solvent, Dodecyltrimethylammonium bromide, Sodium dodecylsulfate, Density, Critical micelle concentration

Abstract

The properties of anionic-rich and cationic-rich mixtures of dodecyltrimethylammonium bromide (DTAB) and sodium dodecylsulfate (SDS) in pure water and methanol-water mixed solvent media were studied using density measurements at room temperature. The results showed that density increases with increasing concentration of surfactant mixture over the entire concentration range investigated in pure water and in the given mixed solvent media and which are found to decrease with an increase in the volume fraction of methanol in the solvent composition. The critical micelle concentration increases with the increase in volume fraction of methanol for both the anionic-rich (SDS-DTAB) and cationic-rich (DTAB-SDS) systems.

BIBECHANA 13 (2016) 114-120

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Published

2015-12-03

How to Cite

Bhattarai, A., Pathak, K., & Dev, B. (2015). Micellization behavior of mixed surfactants in pure water and methanol-water mixed solvent media by density methods. BIBECHANA, 13, 114–120. https://doi.org/10.3126/bibechana.v13i0.13887

Issue

Section

Research Article