| Autor: |
Srivastava, Anirudh, Sharma, Simran, Kumar, Mukul, Raghav, Sumit, Alfakeer, M., Rub, Malik Abdul, Asiri, Abdullah M. |
| Zdroj: |
Chemical Papers; Jan2024, Vol. 78 Issue 1, p207-219, 13p |
| Abstrakt: |
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 αSSY 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 (βm) values. The Surface excess (Γmax) and minimum area per molecule (Amin) increased with increases of αSSY 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 αSSY 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 αSSY 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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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