NAVRACHANA UNIVERSITY

Self-aggregation of a cationic-nonionic surfactant mixture in aqueous media: tensiometric, conductometric, density, light scattering, potentiometric, and fluorometric studies

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dc.contributor.author Sharma, K. Shivaji
dc.contributor.author Patil, Sandeep R
dc.contributor.author Rakshit, Animesh K.
dc.contributor.author Glenn, Karen
dc.contributor.author Doiron, Maryjo
dc.contributor.author Palepu, Rama M.
dc.contributor.author Hassan, P. A.
dc.date.accessioned 2016-04-11T06:26:58Z
dc.date.available 2016-04-11T06:26:58Z
dc.date.issued 2004
dc.identifier.other 10.1021/jp048294o (DOI)
dc.identifier.uri http://27.109.7.66:8080/xmlui/handle/123456789/261
dc.description Thermodynamic Study of Mixed Surfactants of Polyoxyethylene tert-Octyl Phenyl Ether and Dodecyltrimethylammonium Bromide, Peizhu Zheng, Xianshuo Zhang, Jian Fang, and Weiguo Shen; Journal of Chemical & Engineering Data2016 61 (2), 979-986 en_US
dc.description.abstract Self-aggregation of tetradecyltrimethylammonium bromide (TTAB, [CH3(CH2)13N+(CH3)3Br-]) and polyoxyethylene 23 lauryl ether (Brij-35, [CH3 (CH2)11(OCH2CH2)23OH]) binary surfactant mixture in aqueous medium was studied using tensiometric, conductometric, density, quasielastic light scattering, potentiometric, and fluorometric measurements. The binary surfactant mixture was studied well above the Krafft temperature, which was evaluated by conductance measurements. Rubingh’s nonideal solution theory predicted nonideal mixing and attractive interaction between the constituent surfactants in the mixed micelle. Moreover, attractive interaction between the two surfactants in the mixed micelle is explained by assuming that water acts as a bridge between the hydrophilic polar groups of the surfactant molecules. The chain-chain interaction among the surfactant does not seem to be high in this case. The partial specific volume of pure as well as binary surfactant mixtures was also evaluated, and it was inferred that the mixed micelles are more hydrated compared to individual components. The excess Gibbs free energy of mixing was evaluated, and it indicated relatively more stable mixed micelles for this binary combination. Surface tension measurements indicate an existence of a second state of aggregation for the mixed surfactant system, which is supported by the break in conductance-concentration of surfactant profile. The Krafft temperature of TTAB decreases as the nonionic surfactant content increases in the mixed system. Quasielastic light scattering studies suggest an increase in the hydrodynamic radius of the micelle in the mixed surfactant system. en_US
dc.language.iso en en_US
dc.publisher American Chemical Society en_US
dc.subject Light Scattering en_US
dc.subject Density en_US
dc.subject Fluorometric Studies en_US
dc.subject Potentiometric en_US
dc.subject Conductometric en_US
dc.subject Tensiometric en_US
dc.subject Cationic−Nonionic Surfactant Mixture en_US
dc.title Self-aggregation of a cationic-nonionic surfactant mixture in aqueous media: tensiometric, conductometric, density, light scattering, potentiometric, and fluorometric studies en_US
dc.type Article en_US


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