NAVRACHANA UNIVERSITY

α-Sulfonato palmitic acid methyl ester-hexaoxyethylene monododecyl ether mixed surfactant system: Interfacial, thermodynamic, and performance property study

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dc.contributor.author Patil, Sandeep R
dc.contributor.author Mukaiyama, Tsuneharu
dc.contributor.author Rakshit, Animesh Kumar
dc.date.accessioned 2016-04-11T06:14:35Z
dc.date.available 2016-04-11T06:14:35Z
dc.date.issued 2004
dc.identifier.citation Journal of Surfactants and Detergents, 2004, Volume 7, Number 1, Page 87 Sandeep R. Patil, Tsuneharu Mukaiyama, Animesh Kumar Rakshit en_US
dc.identifier.issn 1097-3958
dc.identifier.issn 1558-9293 (Online)
dc.identifier.other 10.1007/s11743-004-0293-y
dc.identifier.uri http://27.109.7.66:8080/xmlui/handle/123456789/260
dc.description Journal of Surfactants and Detergents, Volume 7, Issue 1 , pp 87-96 en_US
dc.description.abstract Interfacial, thermodynamic, and performance properties of aqueous binary mixtures of α-sulfonato palmitic acid methyl ester, C14H29CH(SO3Na)COOCH3(PES), and hexaoxyethylene monododecyl ether, CH3(CH2)11(OCH2CH2)6OH (C12E6), were investigated with tensiometric, conductometric, fluorimetric, and viscometric techniques. The critical micelle concentration (CMC), maximum surface excess, minimum area per molecule of surfactant at the air/water interface, and the thermodynamics of micellization and adsorption were determined. The CMC was very low for mixed systems, indicating probable use as a detergent with less effect on the environment because of surfactant biodegradability and less amount in the environment. The interaction parameter βm, computed by using the theory of Rubingh and Maeda, indicated an attractive interaction (synergism) between the surfactant molecules, which was also confirmed by proton nuclear magnetic resonance studies in the mixed micelle. The micellar aggregation number (N agg), determined by using a steady-state fluorescence quenching method at a total surfactant concentration of about ∼10 mM at 25°C, was almost independent of the surfactant mixture composition. The micropolarity and the binding constant (K sv) for the C12E6/PES mixed system were determined by the ratio of the intensities (I 1/I 3) of the pyrene fluorescence emission spectrum, and the local microenvironment inside the micelle was found to be polar. The viscosity of the mixed system at all mole fractions suggested that mixed micelles are nonspherical in nature. The cloud point of oxyethylene group-containing surfactants was increased by the addition of PES. Foaming was temperature dependent, and a 1∶1 mixed system showed minimum foaming. All performance properties were composition dependent. en_US
dc.language.iso en en_US
dc.publisher Springer-Verlag en_US
dc.subject Foaming en_US
dc.subject Interaction parameter en_US
dc.subject Micellization en_US
dc.subject Mixed surfactant en_US
dc.subject Viscosity en_US
dc.title α-Sulfonato palmitic acid methyl ester-hexaoxyethylene monododecyl ether mixed surfactant system: Interfacial, thermodynamic, and performance property study en_US
dc.type Article en_US


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