Journal of Surface Science and Technology

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Studies on the Effect of Anionic Surfactant on the Microemulsion System Containing [60]Fullerene


Affiliations
1 Applied Chemistry Department, The M. S. University of Baroda, Vadodara-390001, India
     

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Fullerenes have potential applications in the form of microemulsion systems. Microemulsion studies with various alcohols as co-surfactants reveals that as the co-surfactant was changed from propanol to octanol, the water quantity in the microemulsion was less when [60]fullerene was present in the oil. The microemulsion region increases when [ 60]fullerene is present along with co-surfactants like propanol, butanol and pentanol and decreases when hexanol and octanol were present. The thermodynamic properties (ΔG°, ΔH° and ΔS°) of reverse micellisation of SDS in toluene-[60]fullerene solution at 30ºC and 40ºC were calculated and the results show that though there is no significant change in the overall ΔG°, there was significant decrease in the enthalpic interactions with a corresponding increase in the entropy for reverse micellization in toluene. The values of ΔG°, ΔH° and ΔS° are negative indicating the spontaneous and exothermic formation of a reverse micelle.

Keywords

Anionic Surfactant, Critical Reverse Micelle Concentration, [60]Fullerene, Pseudo Ternary Phase Diagram.
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  • Studies on the Effect of Anionic Surfactant on the Microemulsion System Containing [60]Fullerene

Abstract Views: 332  |  PDF Views: 2

Authors

Vaishali Suthar
Applied Chemistry Department, The M. S. University of Baroda, Vadodara-390001, India
C. N. Murthy
Applied Chemistry Department, The M. S. University of Baroda, Vadodara-390001, India

Abstract


Fullerenes have potential applications in the form of microemulsion systems. Microemulsion studies with various alcohols as co-surfactants reveals that as the co-surfactant was changed from propanol to octanol, the water quantity in the microemulsion was less when [60]fullerene was present in the oil. The microemulsion region increases when [ 60]fullerene is present along with co-surfactants like propanol, butanol and pentanol and decreases when hexanol and octanol were present. The thermodynamic properties (ΔG°, ΔH° and ΔS°) of reverse micellisation of SDS in toluene-[60]fullerene solution at 30ºC and 40ºC were calculated and the results show that though there is no significant change in the overall ΔG°, there was significant decrease in the enthalpic interactions with a corresponding increase in the entropy for reverse micellization in toluene. The values of ΔG°, ΔH° and ΔS° are negative indicating the spontaneous and exothermic formation of a reverse micelle.

Keywords


Anionic Surfactant, Critical Reverse Micelle Concentration, [60]Fullerene, Pseudo Ternary Phase Diagram.

References





DOI: https://doi.org/10.18311/jsst%2F2016%2F6598