Azo dyes interactions with surfactants. Determination of the critical micelle concentration from acid?base equilibrium

Khamis, Mustafa; Bulos, B. R.; Jumean, F.H.; Manassra, Adnan; Dakiky, M.

doi:10.1016/j.dyepig.2004.09.012

Cited by 60 publications

(33 citation statements)

References 20 publications

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“…2. Results are shown in table one that has agreed with previous studies 35 . Also, the effect of surfactant concentrations (CTAB, SDS and TX-100) on pK a of H 2 L 2+ were investigated at 25 (C and an ionic strength of 0.1 M KNO 3 spectrophotometrically and spectrofluorimetrically.…”

Section: Resultssupporting

confidence: 82%

Acidity Constants Determination of Triazine Dye Derivative in the presence of some Surfactants by Multiwavelength Spectrophotometric and Spectrofluorimetric

Yeganeh-Faal¹,

Shayeste²,

Bordbar³

et al. 2014

10.5267/j.ccl

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In this work, acidity constants protonated form of 4.4'-bis astilbene-2,2'-disulfonic-disodium salts (TRIAZ) have been determined spectrophotometrically and spectrofluorimetrically at 25• C and ionic strength of 0.1M KNO 3 . A program based on MCR-ALS applied for determination of acidity constants. The results show that the peak values of dye are influenced by the presence of anionic, cationic, and nonionic surfactants. The effects of sodium dodecyl sulfate (SDS), Triton X-100 (TX-100) and cetyl trimethyl ammonium bromide (CTAB) as a surface-active agent on the acidic and basic forms, and the spectral properties of dye were studied. Also, we determined the critical micelle concentration (CMC) for these surfactants by spectrophotometric and spectrofluorimetric triazine dye probes. In addition, by using of evolving factor analysis (EFA) and multivariate curve resolution alternative least squares (MCR-ALS) methods, acidity constants were acquired.

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Section: Resultssupporting

confidence: 82%

Acidity Constants Determination of Triazine Dye Derivative in the presence of some Surfactants by Multiwavelength Spectrophotometric and Spectrofluorimetric

Yeganeh-Faal¹,

Shayeste²,

Bordbar³

et al. 2014

10.5267/j.ccl

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“…CMC point can be determined by examining the changes in the chemical and physical characteristics of surface activator solutions after increasing their concentrations. Several methods have been reported for the determination of CMC such as UV-visible spectrophotometry (Khamis et al 2005;Mondal & Ghosh 2012), fluorimetry (Mondal & Ghosh 2012;Topel et al 2013;Zhu et al 2014), infrared spectroscopy (Tran & Yu 2005), light scattering (Topel et al 2013), nuclear magnetic resonance (NMR) (Yan & Palmer 1969), chromatography (Lin & Lin 2000), sound velocity (Zielinski et al 1987), calorimetry (Simonović & Momirović 1997), and electrochemical techniques (Racaud et al 2010;Nesmerak & Nemcova 2006).…”

Section: Introductionmentioning

confidence: 99%

A new simple method for determining the critical micelle concentration of surfactants using surface plasmon resonance of silver nanoparticles

et al. 2015

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Background: A new and simple determination method for critical micelle concentration (CMC) has been developed based on surface plasmon resonance (SPR) technique. In the current work, the CMCs for sodium dodecyl sulfate (SDS), cetyl trimethyl ammonium bromide (CTAB), and Triton X-100 (TX-100) were determined in aqueous media by SPR of silver nanoparticles (AgNPs). Findings: The variation of the absorbance of AgNPs in respect of bulk water is a consequence of the micelles formation from the surfactants monomer, here, SDS, CTAB, and TX-100. Under the optimal experimental conditions, CMCs for SDS, CTAB, and TX-100 using SPR technique were 8.6 × 10

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“…4 Various techniques such as spectrophotometry, [5][6][7][8] membrane selective electrode, 9 polarography, 10 potentiometry 11 and conductometry [12][13][14] have been applied for studying of dye-surfactant interactions. Considerable studies have confirmed that surfactants can affect the spectra of the solutions of many dyes, [15][16][17] due to aggregation of the dye molecules or dye-surfactant ion pairs and charge transfer between dye and surfactant molecules. 18 The spectral changes of a dye observed in the presence of varying amount of surfactants are consistent with sequential equilibrium involving surfactant monomers, micelles, dye aggregates, premicellar dye-surfactant complex and dye incorporated into the micelle.…”

Section: Introductionmentioning

confidence: 99%

“…4 Various techniques such as spectrophotometry, [5][6][7][8] membrane selective electrode, 9 polarography, 10 potentiometry 11 and conductometry 12-14 have been applied for studying of dye-surfactant interactions. Considerable studies have confirmed that surfactants can affect the spectra of the solutions of many dyes, [15][16][17] due to aggregation of the dye molecules or dye-surfactant ion pairs and charge transfer between dye and surfactant molecules. …”

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confidence: 99%

Interaction of anionic azo dye and TTAB: cationic surfactant

Ghoreishi¹,

Behpour²,

Shabani-Nooshabadi³

2009

J. Braz. Chem. Soc.

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A interação entre três corantes aniônicos azo: C.I. Vermelho Ácido 14 (AR14), C.I. Vermelho Ácido 1 (AR1), C.I. Laranja Ácido 7 (AO7) e um surfactante catiônico, o brometo de tetradeciltrimetilamônio (TTAB), foi investigada por meio da técnica de eletrodo seletivo para surfactante. O eletrodo seletivo para TTAB foi construído e usado para determinar a concentração de monômeros TTAB e, também, de íons surfactantes ligados aos corantes por medidas de força eletromotriz. A constante de formação do complexo corante-surfactante, K 1 , e a variação da energia livre de Gibbs, ΔG 1 0 , foram obtidas a partir dos dados experimentais. Os resultados indicaram que no sistema TTAB/AO7, no qual o corante AO7, mais hidrofóbico, é usado, as interações corante-surfactante são mais fortes do que em outros sistemas. Os resultados também indicaram que ambas interações, hidrofóbica e atração eletrostática, são muito importantes para a formação do complexo entre os corantes e o surfactante. A capacidade máxima de ligação dos corantes de cargas opostas e também o grau de ligação do surfactante aos corantes foram calculados a partir dos dados experimentais.Interaction between three anionic azo dyes, C.I. Acid Red 14 (AR14), C.I. Acid Red 1 (AR1), C.I. Acid Orange 7 (AO7) and a cationic surfactant tetradecyltrimethylammonium bromide (TTAB) has been investigated using surfactant selective electrode technique. The TTAB selective electrode was constructed and used to determine the concentration of TTAB monomers and also surfactant ions bounded to dyes by electromotive force data. The dye-surfactant complex formation constant, K 1 , and the standard free energy change, ΔG 1 0 , could be obtained from the experimental data. The results indicate that in the TTAB/AO7 system, where the more hydrophobic dye AO7 is used, the dye-surfactant interactions are stronger than in other systems. The results also indicate that both the electrostatic attractive and the hydrophobic interactions are very important for the formation of the complex between the oppositely-charged dyes and the surfactant. Maximum binding capacities of the dyes and also the degree of binding of the surfactant to the dyes were calculated from the experimental data.Keywords: ion selective electrode, anionic azo dye, dye-surfactant interactions, TTAB, Acid Red 14, Acid Red 1, Acid Orange 7 IntroductionThe use of water as a medium for textile processing ideally requires that liquid wets the fiber surfaces quickly and uniformly, and here surfactants play a useful role. In addition, surfactants are required for detergency, achievement of level dyeing, and so on. The choice of a particular surfactant for a particular purpose depends on its ability for interaction to fibers and/or other components in the system. Surfactants contain both hydrophobic and hydrophilic moieties and are adsorbed at interfaces between phases, lowering their interfacial tension. 1Surfactants are extensively used in our daily life and also in various industrial processes such as textiles, pulp and paper, paints, ...

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Azo dyes interactions with surfactants. Determination of the critical micelle concentration from acid?base equilibrium

Cited by 60 publications

References 20 publications

Acidity Constants Determination of Triazine Dye Derivative in the presence of some Surfactants by Multiwavelength Spectrophotometric and Spectrofluorimetric

Acidity Constants Determination of Triazine Dye Derivative in the presence of some Surfactants by Multiwavelength Spectrophotometric and Spectrofluorimetric

A new simple method for determining the critical micelle concentration of surfactants using surface plasmon resonance of silver nanoparticles

Interaction of anionic azo dye and TTAB: cationic surfactant

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