The micellization process of the aqueous mixed system Triton X-100 (TX100)-Dodecyltrimethylammonium Bromide (DTAB) was studied with a battery of procedures: surface tension, static and dynamic light scattering and ion-selective electrodes. Results were also analysed with two thermodynamic procedures. The system shows some changes in its behaviour with changing the mole fraction of DTAB, αDTAB, in the whole surfactant mixture. For αDTAB<0.40 micelles are predominantly TX100 with scarce solubilized DTA+ ions, and TX100 acts as a nearly ideal solvent. In the range 0.50<αDTAB<0.75 it seems that none of the components acts as a solvent, and above αDTAB>0.75 there are abrupt changes in the size and electrophoretic mobility of micelles. These phenomena have been interpreted in the light of the thermodynamic results and some TX100-ionic surfactant mixtures of literature.
@article{arxiv.1806.09721,
title = {The aqueous Triton X-100 - Dodecyltrimethylammonium bromide micellar mixed system. Experimental results and thermodynamic analysis},
author = {Patricio Serafini and Marcos Fernández-Leyes and Jhon M. Sánchez and Romina B. Pereyra and Erica P. Schulz and Gillermo A. Durand and Pablo C. Schulz and Hernán A. Ritacco},
journal= {arXiv preprint arXiv:1806.09721},
year = {2018}
}