Effects of electrolytes on interfacial and micelle properties of C. I. reactive orange 16 – dodecylpyridinium chloride binary system / Halide Akbas in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 48, N° 3/2011 (05/2011)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 48, N° 3/2011 (05/2011) . - p. 232-238 Titre : Effects of electrolytes on interfacial and micelle properties of C. I. reactive orange 16 – dodecylpyridinium chloride binary system Type de document : texte imprimé Auteurs : Halide Akbas, Auteur ; Melike Aydemir, Auteur Année de publication : 2011 Article en page(s) : p. 232-238 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants acides Dynamique moléculaire Electrolytes Surfactants Tension superficielle Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : The effect of electrolytes on the interaction between the anionic dye C. I. Reactive Orange 16 and the cationic surfactant dodecylpyridinium chloride was investigated using surface tension measurement in a certain concentration range. The influence of the concentration of electrolyte on critical micelle concentration (CMC) values was observed in the following order; 0.1 M NaCl > 0.5 M NaCl > 1.0 M NaCl. Also, the influence of the electrolyte cations was observed as Na+>Mg2+> K+. An increase on CMC values of dye-surfactant solution with increasing electrolyte concentration is explained as charge screening and also the decrease in these values for higher concentration of electrolyte is attributed to the change of micelle shape. Furthermore this change is due to ionic polarizability, valency and hydrated radius. Using Rubingh’s regular solution theory, the values of micellar interaction parameters (β), were found as negative in all studied mixtures. Note de contenu : - EXPERIMENTAL : Materials - Methods (surface tension measurements - Critical micelle concentration measurements - Preparatio of mixed surfactant solutions - Regular solution theory of surfactant mixtures). - RESULTS AND DISCUSSION : Interaction between the RO16 and DPC. - The influence of concentration of electrolyte - The influence of the kind of elecrolyte Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11705 [article]

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The effect of electrolytes on the interaction of C. I. reactive orange 16-tetradecyltrimethylammonium bromide / Halide Akbas in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 50, N° 2 (03-04/2013)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 50, N° 2 (03-04/2013) . - p. 84-89 Titre : The effect of electrolytes on the interaction of C. I. reactive orange 16-tetradecyltrimethylammonium bromide Type de document : texte imprimé Auteurs : Halide Akbas, Auteur ; Tanzer Taner, Auteur Année de publication : 2013 Article en page(s) : p. 84-89 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants acides Electrolytes Spectrophotométrie Surfactants Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : The aim of this study is to investigate the interaction of a cationic surfactant tetradecyltrimethyl ammonium bromide (TTAB) on the electronic absorption spectra of azo dye Reactive Orange 16 (RO16) and to observe the effects of the kind and concentration of electrolytes on these interactions by means of UV-Vis spectroscopy in submicellar and micellar concentration range at a certain temperature (303 K). TTAB affects the electronic absorption spectra of dye solution that is dye-surfactant interaction results into formation of complex and therefore, a decrease in maximum absorption spectra (1.577 at 494 nm). The electrolyte anions cause an increase on the absorbance of TTAB–RO16 ionpair complex in the following order: Br– > Cl– > SO4 > NO3 > CN– and also for cations; Na+ > K+ > NH4 >Mg2+. The increase or decrease on absorption spectra of RO16-TTAB solution depends on concentration range of the electrolyte added. Note de contenu : - The influence of concentration of electrolyte - The influence of the kind of electrolyte DOI : 10.3139/113.110235 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17884 [article]

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