The Hydrocarbon/Water Interfacial BelJaviour of Alkyl Aryl Sulphonates
IR@IIP: CSIR-Indian Institute of Petroleum, Dehradun
View Archive Info| Field | Value | |
| Creator |
Singh,A.K
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| Date |
2009-07-28T05:54:47Z
2009-07-28T05:54:47Z 2009-07-28T05:54:47Z |
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| Identifier |
Lubrication Science 13-1, November 2000.
http://hdl.handle.net/123456789/402 |
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| Description |
The interfacial tension and solubilisation characteristics of the
alkane / water interfaces of a series of alkyl aryl sulphonates
synthesised with i-butanol as a co-surfactant have been studied.
It was observed that there is a narrow range of carbon
numbers of these sulphonates at which maximum solubilisation
of a particular alkane occurred. This range shifted
progressively to a higher value, with a corresponding increase
in the carbon number of the n-alkane. The extent of solubilisation
of the alkane is highly dependent on the structure of the
hydrocarbon portion of the sulphonate. Unexpectedly, an ultralow
interfacial tension seems not to be an important prerequisite
for the solubilisation of hydrocarbon in the aqueous
surfactant phase. The free energy decrease required for solubilisation
seems to be far more dependent on the energetic
interactions connected with entropy parameters. The conformational
aspects of the hydrocarbon portion of sulphonate
molecules, as a consequence, seem to playa decisive role in
molecular interactions, leading to solubilisation of a large
quantity of a particular hydrocarbon in aqueous solution of a
given sulphonate. The present work aims at understanding the
selection criteria for sulphonates in applications involving
solubilisation and ultra-low interfacial tension at the hydrocarbon
/ water interface, such as those in insecticidal/
pharmaceutical formulations, fire-resistant hydraulic fluids
and enhanced oil recovery.
sulphonates, interfacial tension, solubilisation,
aqueous solution, alkanes, hydrocarbons
surfactants,
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| Language |
en_US
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| Subject |
Hydrocarbons
Alkanes |
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| Title |
The Hydrocarbon/Water Interfacial BelJaviour of Alkyl Aryl Sulphonates
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| Type |
Article
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