The CMC of CTAB in water was determined to be 0.00091 molLвЃ»В№ but the CMC* of CTAB for the CTAB+NaPSS system was determined to be 0.001438 molLвЃ»В№ and CMC* for the CTAB+NaPSS+MR system was observed to be 0.001328 molLвЃ»В№ by conductivity and 0.001310 molLвЃ»В№ by UV-Vis. The Benesi-Hildebrand equation was used to calculate the binding constants from the absorption spectra of MR. With increasing CTAB concentrations, the absorption spectra of MR were observed between 430-440 nm for the basic form steadily dropped to 414-421 nm. With anionic MR, aggregation and micellization become easier, as seen by hypsochromic shift and reduction in the absorption band's intensity. The CAC and CMC* values dropped on raising the concentration of CTAB with MR in the CTAB+NaPSS+MR system, which is caused by the substantial electrostatic interactions between CTAB/NaPSS and MR.

Critical aggregation concentration (CAC), apparent critical micelle concentration (CMC*), ionization degree (О±), binding constant, and various other important thermodynamic parameters were determined by conductivity techniques at 298.15В± 0.2 K. By observing changes in the dye's spectra and the breaking points of conductometric curves, it is obvious that MR causes the development of surfactant aggregates.

techniques to investigate the influence of MR on the interactions between cationic surfactant cetyltrimethylammonium bromide (CTAB) and an anionic polyelectrolyte sodium polystyrene sulfonate (NaPSS) in aqueous environments. The major goal of this work is to use conductometry and UV-Vis. However, the effect of MR dye on CTAPSS has not yet been thoroughly investigated. The concentration of methyl red (MR) dye has a significant influence on how the CTAB+NaPSS complex (CTAPSS) aggregates and sticks together.

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