2016 Volume 3 Issue 5

Conductometric studies on micellization of cetyltrimethylammonium bromide in various alcohols


Morteza Keshavarz
Abstract

The effect various aqueous solutions of methanol, ethanol, and propanol on Critical Micelle Concentrations (CMC) of cetyltrimethylammonium bromide (CTAB) has been studied at 30 and 35◦c using Conductometry technique. The values of CMC at various conditions were determined. The trend of variation of CMC Values with temperature and alcohol percentage has been interpreted on the basis of molecular viewpoint and influencing factors on the structure stability of micelle. The results represent a little change in CMC with respect to these factors. The values of CMC at various temperatures do not show significant change indicating the entropy driven of micellization process. This mater can be related to the predominant role of hydrophobic forces in the micelle formation process with respect to electrostatic interaction.

 

Keywords: Conductometric; CTAB; Alcohols; Critical Micelle Concentrations (CMC)


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