n-Hexadecyl-4-Methylpyridinium Bromide Micellization, Sudan III Solubilization Test, [C16ppicoBr]-SDS Interaction, KBr and NaBr Effects, and Thermodynamics Studies
ChemistrySelect, cilt.10, sa.47, 2025 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 10 Sayı: 47
- Basım Tarihi: 2025
- Doi Numarası: 10.1002/slct.202504201
- Dergi Adı: ChemistrySelect
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core
- Anahtar Kelimeler: micellization, mixed micellization behavior, n-hexadecyl-4-methylpyridinium bromide, surfactants, thermodynamics of micellization
- Kırklareli Üniversitesi Adresli: Evet
Özet
The present study aims to report the micellization behaviors and thermodynamics of n-hexadecyl-4-methylpyridinium bromide [C16ppicoBr] in aqueous solutions at varied temperatures by using conductivity measurements. The Kraft points were determined to be 30.5°°C and 32.1°°C, respectively, for 10 and 50 mM [C16ppicoBr] in aqueous solution. Critical micellar concentration (CMC) values were determined to be quite low in the range of 0.695‒0.885 mM at 308.15‒328.15 K. Moreover, the CMC value of [C16ppicoBr] in aqueous solution was found to be 0.706 mM at 308.15 K by using the Sudan III solubilization method. Also, in aqueous solutions, the effect of [C16ppicoBr] on sodium dodecyl sulfate micellization and the effects of sodium bromide (NaBr) and potassium bromide (KBr) salts on micelle formations of [C16ppicoBr] were studied. In mixed micellization systems prepared, the presence of [C16ppicoBr] in solution facilitates the micellization of sodium dodecyl sulfate, but not much. NaBr and KBr decreased the CMC value of [C16ppicoBr] with their increasing concentrations in aqueous solution. The thermodynamic data showed that micellization of [C16ppicoBr] in water solution at varied temperatures is spontaneous, endothermic at 308.15 K, exothermic at 313.15 K, and higher temperatures.