Effect of sodium chloride on interaction between amino sulfonate amphoteric surfactant and octylphenol polyoxyethylene ether (10) in aqueous solution

Ren, Zhao Hua

doi:10.1016/j.jiec.2015.04.027

Cited by 37 publications

(23 citation statements)

References 24 publications

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“…In a result, it can be found from Figure b or in Table that the experimental value of mixed cmc is smaller than the predicted value, due to the decrease of dipole interaction in the real case. However, unlike the case for the C12AS/OP‐7 mixture, as is found in Figure c, the enough long hydrophilic chain of OP‐10 in the mixed micelle of the C12AS/OP‐10 mixture may be very possible to result in the cross of two hydrophilic chains of OP‐10 resolving in aqueous phase . Then, the steric interaction between the molecules of OP‐10 is unfavorable to the formation of mixed micelle.…”

Section: Resultsmentioning

confidence: 83%

A molecular‐thermodynamic approach to predict the micellization of binary surfactant mixtures containing amino sulfonate amphoteric surfactant and nonionic surfactant

Ren

2017

AIChE Journal

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A molecular‐thermodynamic approach was adopted to predict the value of mixed critical micelle concentration (cmc) for the binary surfactant mixtures constituted by an amino sulfonate amphoteric surfactant, sodium 3‐(N‐dodecyl ethylenediamino)‐2‐hydropropyl sulfonate (abbr. C12AS), and a nonionic surfactant, octylphenol polyethylene ether (OP‐n, where n denotes the average number of oxyethylene glycol ether). In this investigation, considering two positive charges on the hydrophilic group of C12AS, which is unlike to conventional zwitterionic surfactants having one positive charge (such as, alkylbetaine, etc.), three schemes were designed to obtain the geometric parameter describing the dipole structure of C12AS. According to the selected optimum scheme, four cases corresponding to the different conformations of both the headgroup and the hydrocarbon chain of surfactant were discussed. The results show that the predicted value of mixed cmc for the C12AS/OP‐n mixtures agrees well with the experiment value. The deviation of the predicted value from the experimental value can be explained by the effect of the hydrophilicity of OP‐n on the process of micellization. © 2017 American Institute of Chemical Engineers AIChE J, 2017

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Section: Resultsmentioning

confidence: 83%

A molecular‐thermodynamic approach to predict the micellization of binary surfactant mixtures containing amino sulfonate amphoteric surfactant and nonionic surfactant

Ren

2017

AIChE Journal

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“…Increasing the number of methylene groups between the carboxylates sterically favors its interaction with HTAB. The increased electrophilic interaction between the two oppositely charged head groups, inducing formation of mixed micelles, can explain the above sequence of β σ (Huang and Ren, 2019;Ren, 2015;Ren et al, 2016;Ren et al, 2017aRen et al, , 2017bRen et al, 2018). On the other hand, the close proximity of the two carboxylate groups of AAS enhances electrostatic repulsion.…”

Section: Rosen Modelmentioning

confidence: 99%

Theoretical Approaches on the Synergistic Interaction between Double‐Headed Anionic Amino Acid‐Based Surfactants and Hexadecyltrimethylammonium Bromide

Barai

Mandal

Sultana

et al. 2020

J Surfact & Detergents

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Theoretical investigations on the micellization of mixtures of (i) amino acid‐based anionic surfactants [AAS: N‐dodecyl derivatives of aminomalonate, −aspartate, and ‐glutamate] and (ii) hexadecyltrimethylammonium bromide (HTAB), were carried out at different mole ratios. Variation in the theoretical values of critical micelle concentration (CMC), mole fraction of surfactants in the micellar phase (X), at the interface (Xσ), interaction parameters at the bulk/interface (βR/βσ), ideality/nonideality of the mixing processes, and activity coefficients (f) were evaluated using Rubingh, Rosen, Motomora, and Sarmoria‐Puvvada‐Blankschtein models. CMC values significantly deviate from the theroretically calculated values, indicating associative interaction. With increasing mole fraction of AAS (αAAS), the magnitude of the (βR/βσ) values gradually decreased, considered to attributable to hydrophobic interactions. With increasing αAAS, the micellar mole fraction of HTAB (X2) decreased insignificantly and X2 values were higher than those compared to AAS for all combinations, due to the dominance of HTAB in micelles. Micellar mole fraction at the ideal state of AAS (X1ideal) differed from micellar mole fraction of AAS (X1), indicating nonideality in the mixed micellization process. Gibbs free energy of micellization ( ∆Gm) values are more negative than the free energy of micellization for ideal mixing (∆Gmideal), indicating the micellization process is spontaneous. With increasing αAAS, the enthalpy of micellization (ΔHm) and entropy of micellization (ΔSm) values gradually increased, which indicates micellization is exothermic. The different physicochemical parameters of the mixed micelles are correlated with the variation in the spacer length between the two carboxylate groups of AAS.

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“…The surface tension measurements of the mixed surfactant solutions were performed with a JK99C automatic surface tensiometer (Shanghai Zhongchen Digital Technic Apparatus Co., Ltd) using a Wilhelmy platinum plate [15]. Before measuring the surface tension, the surfactant solution was kept in thermostat of 25 ± 0.2°C for at least 50 min.…”

Section: Tensiometrymentioning

confidence: 99%

“…The determined mixed CMC values are given in Table 1. The CMC values of individual surfactants (OP-4, OP-7 and OP-10) are from the literature [2,15,18].…”

Section: Micellization and Intermolecular Interaction In Mixed Micellesmentioning

confidence: 99%

“…Standard uncertainty u are u(T) = ±0.20 K, u(P) = ±0.006 MPa, u(x 1 ) = ±0.002, u(D mic G ideal ) = ±0.004 kJ mol -1 (for two models), u(D mic G) = ±0.005 kJ mol -1 (for Rubingh's model), u(D mic G) = ±0.004 kJ mol -1 (for Rodenas's model), u(D mic H) = ±0.004 kJ mol -1 (for Rubingh's model), u(D mic H) = ±0.005 kJ mol -1 (for Rodenas's model), u(TD mic S) = ±0.004 kJ mol -1 (for two models), and u(TD mic S/ D mic G 9 100%) = ±0.005 (for two models) (0.683 level of confidence) J Surfact Deterg (2017) 20:1197-1203 1201Thermodynamics and Effect of Hydrophilic ChainThermodynamics can help with understanding the molecular interaction. Based on the RST, the free energy change (D mic G) and the enthalpy change (D mic H) of micellization for a binary surfactant mixture can be estimated by the following equations[1][2][3][13][14][15][16][17][18] …”

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confidence: 99%

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Synergistic Interaction between Nonionic Octylphenol Polyoxyethylene Ethers and Effect of Hydrophilic Chain

Huang

Ren

2017

J Surfact & Detergents

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The micellization of binary mixture composed of nonionic octylphenol polyoxyethylene ether (OP‐n, n is the average number of oxyethylene unit) and its homologues, as well as the effect of hydrophilic chain were investigated. The tensiometry was adopted to determine the critical micelle concentration of binary surfactant mixture. According to the regular solution theory, some thermodynamic models were used to predict the parameters of micellization and the thermodynamic parameters. For all the three binary mixtures of nonionic/nonionic surfactants, each of which shows a nonideal mixing and can behave synergistically in aqueous solution. For both the mixture of OP‐10/OP‐7 and the mixture of OP‐10/OP‐4, the positive deviation of the mole fraction of surfactant in mixed micelle from its ideal value coexists with the negative deviation in the entire range of compositions in aqueous solution, while for the mixture of OP‐7/OP‐4, it only shows a positive deviation. Thermodynamic data indicate that for all the three binary surfactant mixtures, the process of micellization is entropically spontaneous, and the change of hydrophilic chain results in the difference in the stability of mixed micelle. The results can be explained by the steric effect, the hydrogen bonding and the hydration. The work helps with understanding the interaction between molecules and properties for some industrial products constituted by nonionic surfactant and its homologues.

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Effect of sodium chloride on interaction between amino sulfonate amphoteric surfactant and octylphenol polyoxyethylene ether (10) in aqueous solution

Cited by 37 publications

References 24 publications

A molecular‐thermodynamic approach to predict the micellization of binary surfactant mixtures containing amino sulfonate amphoteric surfactant and nonionic surfactant

A molecular‐thermodynamic approach to predict the micellization of binary surfactant mixtures containing amino sulfonate amphoteric surfactant and nonionic surfactant

Theoretical Approaches on the Synergistic Interaction between Double‐Headed Anionic Amino Acid‐Based Surfactants and Hexadecyltrimethylammonium Bromide

Synergistic Interaction between Nonionic Octylphenol Polyoxyethylene Ethers and Effect of Hydrophilic Chain

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