Influence of Alcohol/Temperature on the Interaction of Sodium Dodecyl Sulfate with Cetyltrimethylammonium Bromide: Experimental and Theoretical Study

Mahbub, Shamim; Rana, Shahed; Rub, Malik Abdul; Hoque, Md. Anamul; Kabir, Shariff E.; Asiri, Abdullah M.

doi:10.1021/acs.jced.9b00456

Cited by 22 publications

(22 citation statements)

References 65 publications

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“…A linear variation of Δ H c ° values with Δ S c ° values for TX-100/TX-100 + CFH was observed in the entire cases, and such change of Δ H c ° with Δ S c ° is called enthalpy–entropy compensation (Figure ), which was attained by means of the following relation ,,,− In eq , Δ H c ° , * and T c represent intrinsic enthalpy and compensation temperature, respectively. The Δ H c ° , * and T c values provide significant information about solute–solute interaction and solute–solvent interaction, respectively. − The calculated values of Δ H c ° , * and T c for studied systems are presented in Tables –.…”

Section: Resultsmentioning

confidence: 99%

Influence of Polyol/Salt Additives on the Drug-Mediated Phase Separation and Thermodynamic Properties of Triton X-100

et al. 2019

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Herein, we investigated the impact of different additives [polyols (glucose, galactose, and maltose)/electrolytes (KCl, K 2 SO 4 , and K 3 PO 4 •7H 2 O)] on the interaction between quinolone antibiotic drug, ciprofloxacin hydrochloride (CFH), and Triton X-100 (TX-100) via the cloud point (CP) measurement technique. The magnitudes of CP of TX-100 were observed to be reduced with the enlargement of TX-100 concentration. The CP values show U-shaped variation as a function of CFH concentration in the aqueous medium. The CP values dwindle in the existence of electrolyte, which continues with the rise of electrolyte concentration. The observed CP values in the electrolyte medium follow the order CP K 3 PO 4 •7H 2 O > CP K 2 SO 4 > CP KCl . The CP values reduced in the presence of organic additives (polyols) also. The executed magnitudes of Gibbs free energy (ΔG c °) of clouding were positive in all cases, signifying the nonspontaneous phenomenon. The ΔG c °values reduce with TX-100 concentration. The values of enthalpy of clouding (ΔH c °) and entropy of clouding (ΔS c °), as well as different transfer properties of thermodynamic parameters, were estimated and interpreted in detail. Excellent entropy−enthalpy compensation was observed in all cases.

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Section: Resultsmentioning

confidence: 99%

Influence of Polyol/Salt Additives on the Drug-Mediated Phase Separation and Thermodynamic Properties of Triton X-100

et al. 2019

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“…So the reduction of the slope after micellization helps us for the estimation of the extent of counterion dissociation (α) through the equation, α = S post /S pre , where S pre and S post represent the slopes in premicellar and postmicellar area accordingly. [33][34][35] The α value determination method by conductivity measurement and the ion-selective membrane electrode method were performed by different researchers. [36][37][38] The determination of α value of micellar systems has significance from the application viewpoint.…”

Section: Conductivity Measurement Methodsmentioning

confidence: 99%

Role of carbonate electrolytes on interaction of quinolone drug with anionic surfactant at various temperatures: A conductometric study

Mahbub

Islam

Masum

et al. 2020

J of Physical Organic Chem

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The role of different carbonate salts on the interaction of anionic surfactant sodium dodecyl sulfate (SDS) with employed quinolone antibiotic drug (ciprofloxacin hydrochloride [CFH]) was explosively inspected through measuring specific conductivity (κ) of the investigated system. The drug, CFH, is an excellent antibiotic for the treatment of different bacterial infections like skin, urinary tract, and respiratory infections. The estimated critical micelle concentrations (cmc) of SDS were observed to be dwindled in the attendance of electrolytes and cmc reduction continues with the escalation of the electrolyte's concentration. The magnitudes of cmc for the SDS + CFH mixture were reduced with the elevation of temperature in K2CO3 and CaCO3 medium while increased with the rise of the temperature in the Na2CO3 medium. The magnitudes of counterion binding to micelles (β) were increased with the increase of the concentration of Na2CO3 and K2CO3 up to definite value and then reduced with the increase of successive rise of concentration of both salts at all temperatures while decreased monotonically with the rise of electrolyte concentration in CaCO3 medium. The values of standard free energy ( ∆Gmo) were achieved to be negative in each case suggesting spontaneous self‐assembly formation. The standard entropy change ( ∆Smo) along with enthalpy change ( ∆Hmo) was also assessed and discussed elaborately.

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“…The CMC 1 increases as the EtOH content of ethanol+water medium increases for the AR + CTAB system (Table 1). It is well documented that the presence of ethanol creates a phenomenon known as the structured solvent, at lower concentrations of ethanol that disappears with the further addition of ethanol (Franks and Ives, 1966;Mahbub et al, 2019d).With the further addition of ethanol, the latter can penetrate to the outer region of the micelle which induces micellar swelling, resulting in a decrease of the charge density of the micellar surface and thus a reduction in the degree of counter ion binding capacity (Rosen, 2004). Consequently, the CMC of the corresponding micellar system in the ethanolic medium is increased (Emerson and Holtzer, 1967;Nazir et al, 2009).…”

Section: Influence Of Ethanol Composition On the Micellization Of Ar mentioning

confidence: 99%

“…Changes in entropy due to micelle formation ΔS 0 m À Á were calculated from the following equation (Mahbub et al, 2018;Mahbub et al, 2019aMahbub et al, , 2019bMahbub et al, , 2019cMahbub et al, , 2019d:…”

Section: Thermodynamic Parameters For Ar + Ctab Mixturesmentioning

confidence: 99%

“…When surfactants are added to any solvent, they undergo 'self-assembly' by balancing two opposing interactions (hydrophobic and hydrophilic) with the solvent. The self-assembled structure referred to as 'micelle' is formed after reaching a certain surfactant concentration called critical micelle concentration (CMC) Rub, 2019a, 2019b;Mahbub et al, 2019aMahbub et al, , 2019bMahbub et al, , 2019cMahbub et al, , 2019d.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Additives and Temperature on the Interaction of Acid Red 151 Dye with Cetyltrimethylammonium Bromide: A Conductometric Study

Nur

Mahbub

Rahman

et al. 2020

J Surfact & Detergents

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The interaction of an anionic textile dye, acid red 151 (AR), with a cationic surfactant, cetyltrimethylammonium bromide (CTAB), in aqueous electrolyte medium (e.g., KCl, NaCl) and in H2O + ethanol medium was observed using the conductometric method. Two critical micelle concentrations (CMC) were found for the AR + CTAB system in water and H2O + ethanol medium, but only one CMC was detected for AR + CTAB in salt+H2O media and for pure CTAB in all solutions. The change in CMC behavior of CTAB in the presence of AR indicates the occurrence of strong interaction between AR and CTAB. The extent of solubility increases with an increase of temperature, which disfavors micellization. The CMC values in NaCl solution are comparatively lower than those found in KCl solution, which signifies that the micelle formation is more favorable in attendance of NaCl. In aqueous ethanol solution, two CMC values were also observed for AR + CTAB that are higher than those obtained in water. The free energy of micellization (∆Gm0) was negative, which illustrates a thermodynamically spontaneous micellization process. The values of enthalpy (∆Hmo) and entropy (∆Smo) of micellization show that the process was entirely entropically driven at a lower temperature; but, enthalpic events are favored at elevated temperature in electrolyte medium, whereas both enthalpy and entropy are reduced in attendance of ethanol. In aqueous medium, the thermodynamic parameters signify the presence of electrostatic interaction between AR and CTAB at higher temperatures, while the hydrophobic interaction is the main driving force at a lower temperature. A linear expression of ∆Hmo as a function of ∆Smo demonstrates enthalpy‐entropy compensation over the experimental conditions employed in this study.

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Influence of Alcohol/Temperature on the Interaction of Sodium Dodecyl Sulfate with Cetyltrimethylammonium Bromide: Experimental and Theoretical Study

Cited by 22 publications

References 65 publications

Influence of Polyol/Salt Additives on the Drug-Mediated Phase Separation and Thermodynamic Properties of Triton X-100

Influence of Polyol/Salt Additives on the Drug-Mediated Phase Separation and Thermodynamic Properties of Triton X-100

Role of carbonate electrolytes on interaction of quinolone drug with anionic surfactant at various temperatures: A conductometric study

Influence of Additives and Temperature on the Interaction of Acid Red 151 Dye with Cetyltrimethylammonium Bromide: A Conductometric Study

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