ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Mixed micellization between sunset yellow dye and hexadecyltrimethylammonium chloride/sodium tetradecyl sulphate surfactants in an aqueous medium

Anirudh Srivastava, Simran Sharma, Mukul Kumar, Sumit Raghav, M. Alfakeer, Malik Abdul Rub, and Abdullah M. Asiri

Central Research and Incubation Center, Swami Vivekanand Subharti University, Meerut, India

E-mail: ani_srivastava83@yahoo.co.in

Received: 4 July 2023  Accepted: 4 September 2023

Abstract:

The aggregation behaviour of organic dyes and their application to produce mixed micelles with surfactants has received not much study. The critical micelle concentration (CMC) of mixed micelle was obtained by the mixture of sunset yellow (SSY) and hexadecyltrimethylammonium chloride (CTAC)/ sodium tetradecyl sulphate (STS) in an aqueous media using surface tension and conductivity methods. The maximum reduction in CMC was found at α_SSY 0.5, and CMC was 0.685 mmolL⁻¹ for SSY-CTAC and 0.784 mmol L⁻¹ for SSY-STS. The mixed micelle for dye-surfactants exhibited significant attractive interactions of SSY with CTAC and STS through the negative interaction parameter (β_m) values. The Surface excess (Γ_max) and minimum area per molecule (A_min) increased with increases of α_SSY 0.9 to 0.1 which indicated that more CTA + and ST¯ absorbed than SY¯ monomers in SSY–CTAC and SSY–STS. The peff values were found to be 0.169 and 0.045 for SSY-STS and 0.173–0.052 for SSY-CTAC in mixed micellar solutions between α_SSY 0.9 and 0.1, respectively, indicating the formation of spherical mixed micelles. Studies using Transmission electron microscopy (TEM) and dynamic light scattering (DLS) verified the development of spherical vesicles with a diameter of 300.2 nm for SSY-CTAC and spherical micelles 85.7 nm for SSY-STS at α_SSY 0.5. The Ostwald viscometer measured viscosity (η), which affected mixed micelles sizes and morphologies for mixed aggregates. In conclusion, the application of CMC in amphiphilic dye could be utilised to improve the surface activity of excipients in the applications of the textile, pharmaceutical, and food sectors.

Keywords: Mixed micelles; Thermodynamics models; Adsorption; Transmission electron microscopy; Dynamic light scattering

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-023-03063-0

Chemical Papers 78 (1) 207–219 (2024)