Effect of Solvent Composition on the Critical Micelle Concentration of Cetylpyridinium Chloride in Ethanol-Water Mixed Solvent Media

Bhattarai, Ajaya; Shah, Sujit Kumar; Yadav, Ashok Kumar

doi:10.3126/njst.v13i1.7446

Cited by 14 publications

(12 citation statements)

References 13 publications

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“…The degree of micellar ionization (a) was calculated from the ratio of the slopes of the post-micellar region (above the CMC) and in the pre-micellar region (below the CMC) [42]. The CMC values of all the surfactants in water are in fair agreement with the published data in the literature [22,[47][48][49][50][51][52] (Table 2). CMC and a values are listed in Table 2.…”

Section: Micellar Propertiessupporting

confidence: 76%

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Study of Solubility Efficiency of Polycyclic Aromatic Hydrocarbons in Single Surfactant Systems

Lakra

Kumar

Yadav

et al. 2013

J Surfact & Detergents

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Water solubility enhancements of two polycyclic aromatic hydrocarbons i.e., naphthalene (Naph) and anthracene (Anth) in single surfactants system have been measured by UV–VIS‐Spectrophotometer. The relationships between solubilizing capacity and their solubilization efficiency towards polycyclic aromatic hydrocarbons (PAH) have been quantified and discussed in terms of the molar solubilization ratio (MSR), the micelle‐water partition coefficient (Km) and standard free energy of solubilization (ΔG°s). The micellar and surface properties of some cationic and anionic surfactants have been investigated by conductivity, surface tension and fluorescence measurements at 300 K. Above the CMC, maximum solubilization occurs in cationic surfactants where as the solubilization is least in the presence of anionic surfactants. The negative value of ΔG°s shows spontaneity of the solubilization process. The MSR values are larger in naphthalene than anthracene (Naph > Anth). The present studies provide valuable information for the selection of surfactants for solubilizing water‐insoluble compounds.

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Section: Micellar Propertiessupporting

confidence: 76%

“…Both DG m and DG ads are negative and their magnitudes reveal the latter to be more spontaneous due to the hydrophobicity of amphiphiles, which leads them to an air/ water interface. [47] c Ref [48] d Ref [49] e Ref [50] f Ref [51] g Ref [52] J Surfact Deterg (2013) 16:957-966 961…”

Section: Surface Propertiesmentioning

confidence: 99%

Study of Solubility Efficiency of Polycyclic Aromatic Hydrocarbons in Single Surfactant Systems

Lakra

Kumar

Yadav

et al. 2013

J Surfact & Detergents

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“…The solvent plays an important role in the formation of critical micelle concentration, which in turn depends on the physical properties of the applied solvent. The dielectric constant of the solvent have a prominent role in the formation of critical micelle concentration (27,28) Results and Discussion:…”

Section: Determination Of Critical Micelle Concentrationmentioning

confidence: 99%

Effect of Temperature and Alcohol on the Determination of Critical Micelle Concentration of Non- Ionic Surfactants in Magnetic Water

Al-Hatem¹

2020

Baghdad Sci.J

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The determination of critical micelle concentration of selected non-ionic surfactants (Tween 20,40 and 80) have been investigated using magnetic water(MW)as an aqueous medium.Conductometry technique is used to determine critical micelle concentration.The effect of alcohol addition and temperature variation at the range(293.15 -303.15K) are also pursued. It is concluded that the process of micellization is spontaneous and endothermic because of the observed free energy of micellization (ΔGom) , enthalpy change of micellization (ΔHom), and entropy change of micellization (ΔSom) for the system was also studied.The properties of the non-ionic surfactants were studied, both in absence and presence of alcohol. The results obtained were explained in light of hydrophobic-hydrophilic interactions and chain length of alcohol.The temperature change has slight effect on the micellization process. .

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“…In the case of ionic surfactants, the utilization of electrochemical measurement is much more convenient, especially the measurements of the electrical conductivity of their solutions with varying concentration. The conductometric method is based on the finding of a breaking point on the curves, which describe the concentration dependence of conductivity [2]. To investigate the solution properties of surfactants, the electrical conductivity method is very promising one as one can study the various thermodynamic parameters.…”

Section: Electrical Conductivitymentioning

confidence: 99%

Investigation on solution properties of surfactants in mixed solvent media: Landmark towards Surface Chemistry in Eastern Nepal

Bhattarai

2014

BIBECHANA

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Surfactants are amphiphilic molecules having a hydrophilic or water soluble moiety (head group) and a hydrophobic, or water insoluble moiety (tail group). Surfactants are not only related to soaps and detergents, they are also in heavy demand for industrial processes requiring colloid stability, metal treatments, mineral flotation, pesticides, oil production, pharmaceutical formulation, emulsion polymerization, particle growth and many more. That is why surfactants have been and continue to be a very active area of scientific research and commercial growth for several decades. One interesting property of surfactants is that at low concentrations, they exist solely as monomers. The formation of micelles, begins at a specific surfactant concentration termed the critical micelle concentration (cmc), where the physical properties of the solution, such as interfacial tension, electrical conductivity, and light scattering behaviour, often changes abruptly due to the existence of micelles. The formation of micelles will be able to calculate various thermodynamic parameters. These parameters make surfactants not only an interesting and rich area for the exploration of novel phenomena but also an area of research which can lead to new applications in a variety of fields. However, most of the previous studies on surfactants are limited to aqueous media only. Studies in mixed solvent media are very natural one as one can modulate the conformations of surfactants and their interactions easily by simply varying the composition of the media. With this concept, the research team of Eastern Nepal has started to work the solution properties of surfactants in different mixed solvent media in presence and absence of salts and has also investigated cationic and anionic surfactant interaction in mixed solvent media. DOI: http://dx.doi.org/10.3126/bibechana.v11i0.10400 BIBECHANA 11(1) (2014) 175-180

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Effect of Solvent Composition on the Critical Micelle Concentration of Cetylpyridinium Chloride in Ethanol-Water Mixed Solvent Media

Cited by 14 publications

References 13 publications

Study of Solubility Efficiency of Polycyclic Aromatic Hydrocarbons in Single Surfactant Systems

Study of Solubility Efficiency of Polycyclic Aromatic Hydrocarbons in Single Surfactant Systems

Effect of Temperature and Alcohol on the Determination of Critical Micelle Concentration of Non- Ionic Surfactants in Magnetic Water

Investigation on solution properties of surfactants in mixed solvent media: Landmark towards Surface Chemistry in Eastern Nepal

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