AJAC  Vol.5 No.1 , January 2014
Determination of Critical Micel Concentration of PEG-10 Tallow Propane Amine: Effects of Salt and pH
Abstract: Most applications of surfactants depend on formation and characteristics of micelle. In this study we measured critical micelle concentration (CMC) of cationic surfactant N, N’, N’-polyethylene (10)-N tallow-1, 3-di amine propane (PEG-10 tallow) in aqua solution by using electrical conductivity and surface tension methods. The CMC value of PEG-10 tallow with two different methods was found very close to 1.40 × 10?3 M with electrical conductivity, and 1.41 × 10?3 M with surface tension. It also investigated the effect of inorganic salt (NaCl) and pH on micellization of cationic surfactant PEG-10 tallow. With increasing addition of NaCl, formation of micelle structure resulted in a higher CMC. However, at low salt concentrations smaller CMC value was observed comparing the critical micelle concentration of individual PEG-10 tallow. When it comes to the effect of changing pH in CMC of the PEG-10 tallow , it was clearly found that micelle formation or CMC of surfactant was independent on alkaline pH (between 6 and 10), but it was dependent on acidic pH (below 5).
Cite this paper: N. Ataci and A. Sarac, "Determination of Critical Micel Concentration of PEG-10 Tallow Propane Amine: Effects of Salt and pH," American Journal of Analytical Chemistry, Vol. 5 No. 1, 2014, pp. 22-27. doi: 10.4236/ajac.2014.51004.

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