Analysis of Mixed Micellar Behavior of Cationic Gemini Alkanediyl-α,ω-bis(dimethylcetylammonium bromide) Series with Ionic and Nonionic Hydrotropes in Aqueous Medium at Different Temperatures

Khan, Iqrar Ahmad; Khanam, Ahmad Jahan; Sheikh, Mohmad Shafi; Kabir-ud-Din, †

doi:10.1021/jp2018814

Cited by 13 publications

(2 citation statements)

References 56 publications

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“…The micelles solution is a thermodynamic equilibrium system, so the thermodynamic method can be used to study the thermodynamic changes in the process of micelles formation [33,34] …”

Section: Resultsmentioning

confidence: 99%

Properties of Mixed System of N‐Coco Propylene Bis‐guanidine Acetate (CPGA) and Nonionic Surfactants

Wang

Zhang

et al. 2021

ChemistrySelect

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To study the effect of nonionic surfactant on the properties of cationic surfactant N‐coco propylene bis‐guanidine acetate (CPGA), different ratios of CPGA and fatty alcohol polyoxyethylene ether (AEO9) or alkyl polyglycoside (APG1214) were mixed, respectively. The surface activity, interaction parameters, and the application performances of wetting, emulsification and foam of the mixed system were investigated systematically. After the addition of AEO9 or APG1214, the critical micelle concentration (CMC) of mixed system changes distinctly. The results of interaction parameters indicate that the synergistic effects exist between CPGA and AEO9 or APG1214, and the micellizations of the mixtures are spontaneous. The change trend of the equilibrium contact angle is similar to that of the surface tension at CMC (γCMC) for the corresponding mixed system. The improvement of wettability of CPGA by AEO9 is significantly stronger than that by APG1214. The emulsifying capacity of CPGA to liquid paraffin or soybean oil is almost enhanced by AEO9 or APG1214. AEO9 has clear defoaming effect on CPGA, and only a small amount of APG1214 can increase the foam stability of CPGA.

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“…The micelles solution is a thermodynamic equilibrium system, so the thermodynamic method can be used to study the thermodynamic changes in the process of micelles formation [33,34] …”

Section: Resultsmentioning

confidence: 99%

Properties of Mixed System of N‐Coco Propylene Bis‐guanidine Acetate (CPGA) and Nonionic Surfactants

Wang

Zhang

et al. 2021

ChemistrySelect

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“…Geminis, also known as dimeric surfactants, are built of two (or more) hydrophobic tails connected by a spacer at the level of the polar head groups. In the last two decades, in addition to the pioneering works of Zana [5,6], Menger [7,8], Rosen [9][10][11], Oda [12,13], Tsubone [14,15], Bhattacharya [16], our group too has made its due contribution [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34]. The aim has been to synthesize and understand the physicochemical properties of gemini surfactants and to study the effect of nature of spacer and tail on these properties.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Approach to Mixed Systems of Non-Ionic Cremophor EL and Cationic Gemini Surfactants in Aqueous Solution

Naqvi

Noori

Kabir-ud-Din³

2014

Zeitschrift Für Physikalische Chemie

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Surfactant solutions in practical applications usually are mixtures of different types, especially ionic and nonionic ones. The mixing behavior of nonionic Cremophor EL-cationic gemini systems was therefore investigated by surface tension measurements. The Gemini surfactants used were of the type alkanediyl -, -bis(dimethylalkylammonium bromide), (alkyl: 14 or 16 and alkane: butane, pentane or hexane), designated in the text as 14-s-14/16-s-16 (where s is the spacer length). The experimental results indicated that the mixed systems of EL with 16-6-16, 14-5-14 and 14-6-14 have lower cmc values than of pure surfactants. Comparison between experimental and calculated values of cmc (cmc and cmc id ) showed that the interaction between the component amphiphiles inside aggregates of EL with RH, 16-4-16, 16-5-16 and 14-4-14 was not ideal but shows antagonism. Such fact was reflected by the values of activity coefficients also. This may be due to the steric repulsions which decrease with the increase in spacer length. The aggregates were mainly comprised of geminis at low stoichiometric mole fraction of EL ( 1 ) while by EL at high 1 . The molecular interaction parameter, m , calculated using Rubingh's approach, was negative for mixed systems of EL with 16-6-16, 14-5-14 and 14-6-14. Surface parameters, evaluated by Rosen's model, also suggested mixed monolayer formation with negative for all 16-s-16, 14-4-14 and 14-6-14 systems.

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Influence of additive on the aggregation behavior of drug and cationic hydrotrope aniline hydrochloride mixtures: a physicochemical assessment

Alghamdi

Rub

Azum

et al. 2020

J of Physical Organic Chem

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We investigated the influence of an additive (50 mmol kg–1 NaCl/300 mmol kg–1 urea [U]) on the aggregation of amphiphilic promethazine hydrochloride (PMH) drug and cationic hydrotrope–aniline hydrochloride (AnHCl) mixtures at various temperatures and ratios. The drug PMH is mostly used for the treatment of allergic symptoms. The obtained critical micelle concentration (cmc) values are well below the cmcid (ideal cmc) value, which confirms interactions between components PMH and AnHCl in the solution mixture. The micellar mole fraction (X1Rub, X1Rod, and X1id) of the first component (AnHCl) was evaluated using different models, which suggested greater involvement of AnHCl in mixed micelles (as expected); besides, the obtained micellar mole fraction values increase with increase in the mole fraction (α1) of AnHCl. The interaction parameter (β) values obtained were negative, which confirms attractive interaction or synergism among the components. Activity coefficients ( f1Rub [AnHCl] and f2Rub [PMH]) values are always found below one confirming the nonideality as well as attractive interaction between the components. Different physicochemical parameters evaluated suggested attractive interaction between the components (PMH and AnHCl) in all studied solvents; however, in salt media, the interaction increases to some extent, whereas in urea media, it decreases to some extent. Diverse thermodynamic parameters (Gibbs free energy [ΔGm0], enthalpy [ΔHm0], and entropy [ΔSm0]) of micellization were computed and discussed separately. The excess free energy ( ∆GexRub) values of all systems were negative, suggesting higher stability of formed mixed micelles as compared with singular‐component micelles.

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Analysis of Mixed Micellar Behavior of Cationic Gemini Alkanediyl-α,ω-bis(dimethylcetylammonium bromide) Series with Ionic and Nonionic Hydrotropes in Aqueous Medium at Different Temperatures

Cited by 13 publications

References 56 publications

Properties of Mixed System of N‐Coco Propylene Bis‐guanidine Acetate (CPGA) and Nonionic Surfactants

Properties of Mixed System of N‐Coco Propylene Bis‐guanidine Acetate (CPGA) and Nonionic Surfactants

Experimental and Theoretical Approach to Mixed Systems of Non-Ionic Cremophor EL and Cationic Gemini Surfactants in Aqueous Solution

Influence of additive on the aggregation behavior of drug and cationic hydrotrope aniline hydrochloride mixtures: a physicochemical assessment

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