BEHAVIOR OF ALKYL ARYL SULFONATE IN HEPTANE
IR@IIP: CSIR-Indian Institute of Petroleum, Dehradun
View Archive Info| Field | Value | |
| Creator |
Anand,O.N
Singh,A.K |
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| Date |
2009-07-23T06:00:21Z
2009-07-23T06:00:21Z 2009-07-23T06:00:21Z |
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| Identifier |
Proceedings of PETROTECH-2003 January 9-12, 2003, New Delhi
http://hdl.handle.net/123456789/382 |
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| Description |
The interfacial tension, surface tension, intrinsic viscosity and solubilization of a series
of Hexadecyl long chain, alkyl cycloalkyl and alkyl aryl sulfonates have been studied in
Heptane as the hydrocarbon medium. It was observed from a distinct and significant
change in the properties of sulfonate in Heptane media, within a narrow range of
concentration, upon micellization (1,2). A decrease in magnitude of hydrocarbon/water
interfacial tension continues even after micellization, indicating that surfactant continues
to contribute to surface concentration at hydrocarbon/air & hydrocarbon/water interface
even beyond cmc. The surface tension starts increasing after certain concentration
beyond cmc, which indicates that number of surfactant molecules at air/hydrocarbon
interface, decrease and instead, contribute to micellization. The axial ratio and micellar
weights show that medium size micelles of un-spherical shape and narrow size
distribution are formed in hydrocarbon medium (3,4). The solubilization of alkanes in
aqueous sulfonates does not depend upon the hydrocarbon/ water interfacial tension but
is directly related to the structure of the hydrocarbon portion of the sulfonate. While
saturates hardly increases the solubilization (5.6). The mono and di- rings aromatic
derivatives, Hexadecyl Naphthalene sulfonate in particular, greatly enhances the
solubilization. The structure of hydrocarbon solubilized as well as that of sulfonate
influences the amount of solubilization. The studies are important from the point of view
of application of sulfonates as surfactants and additives.
KEYWORDS : Sulfonates, Heptane, Interfacial Tension, Surface Tension, Intrinsic
viscosity, Micelle, Solubilization, Thermodynamic, Shape & Size.
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| Language |
en_US
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| Subject |
Thermodynamic
Intrinsic viscosity |
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| Title |
BEHAVIOR OF ALKYL ARYL SULFONATE IN HEPTANE
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| Type |
Article
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