Spectrophotometric and Conductometric Study of Methyl Orange - Cetylpyridinium Chloride Ion Pair in Aqueous Solution

Edbey, Khaled; Ttaib, K. El; Benhmid, A.; Eltaboni, Fateh; Imragaa, Abdelqader; Alferjany, Anas

doi:10.9734/bjast/2016/22949

Cited by 3 publications

(2 citation statements)

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“…potentiometry [5], or conductometry [6]. The most often used method to investigate dye -surfactant interactions at a concentration below and above CMC is spectrophotometry [7][8][9][10]. Traditionally, the CMC can be determined by observing sharp changes in a number of physical properties such as surface tension [11], turbidity [12], UV-Vis absorbance [3,13,14], and classically electrical conductivity [15].…”

Section: Manymentioning

confidence: 99%

Spectral Studies of Eriochrome Black T in Cationic Surfactants

Edbey

El‐Hashani

Benhmid

et al. 2018

CSIJ

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The critical micelle concentration (CMC) for a series of cationic surfactants N-Alkyltrimethylammonium i.e. (C n TAC, n=12,14,16,18) have been determined by electrical conductivity and surface tension methods. The interaction of anionic dye Eriochrome Black T (EBT) with cetyl-trimethylammonium chloride and cetylpyridinium chloride (CPC) has been investigated spectrophotometrically. The binding constant (K b ) and the surface excess (Γ) were calculated. The results show that with increasing the surfactants alkyl chain lengths, CMC and minimum area (A min ) decreases, while the surface excess concentrations increase. It has been found that the binding constant of CPC is double -fold that than of the binding constant of cetyl-trimethylammonium chloride (C 16 TAC).

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Section: Manymentioning

confidence: 99%

Spectral Studies of Eriochrome Black T in Cationic Surfactants

Edbey

El‐Hashani

Benhmid

et al. 2018

CSIJ

Self Cite

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“…This trend in the spectrum of CPC was consistent with the results observed by Dutta et al (2008). The results may be due to the formation of micelles of CPC which incorporates the dye molecules inside (Edbey et al, 2016) or the formation of surfactant aggregates with solubilized dye which resulted in the decrease in absorbance values of dye solution. (2.5 x 10 volume fraction of methanol in the range 500-700 nm at 300±2 K. (2.5 x 10 volume fraction of methanol in the range 500-750 nm at 300±2 K. (2.5 x 10 fraction of methanol in the range 500-800 nm at 300±2 K.…”

Section: Preparation Of Cpc Stock Solutionmentioning

confidence: 99%

Interaction of Cetylpyridinium Chloride and Methylene Blue in Methanol-Water Solvent Media

Shrestha¹,

Rai²,

Subba³

et al. 2018

Himalayan J. Sci. Technol.

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The interaction of Methylene blue with Cetylpyridinium chloride (CPC) in a series of solvents containing 0.1, 0.2 and 0.3 volume fractions of methanol in water were studied at room temp (300±2 K) by UV-Vis spectrophotometer. The CPC concentrations were varied from 0.2 x 10-3 to 2 x 10-3 mol dm-3. A fixed dye concentration of 2.5 x 10-5 mol dm-3 was used for this purpose. The spectrum analysis was performed for both the dye solution and mixtures containing dye and surfactant of different concentrations. The dye solution showed the absorbance maximum at 664 nm and a shoulder at 610 nm. In 0.3 volume fraction of methanol as solvent, the dye and surfactant mixed solution showed a shift in peak values towards shorter wavelength (blue shift) from peak of the dye solution. The shift in peak increased with increase in surfactant concentration up to 0.6 x10-3 mol dm-3, beyond which no further shift increment occurred. In the case of 0.1 and 0.2 volume fractions of methanol in water, no shift in peak was found at all concentrations of dye and surfactant. The absorbance of dye and surfactant mixed solution decreased gradually in 0.2 volume fraction of methanol with increase in surfactant concentration, whereas no significant change in absorbance was seen in 0.1 volume fraction of methanol. The shift decreased gradually with decrease in methanol concentration in the solvent.

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