Thermodynamic Study for Aggregation Behavior of Hydrotropic Solution
Aggregation behavior of sodium salicylate and sodium cumene sulfonate was studied in aqueous solution at different temperature. Specific conductivity and relative viscosity were measured at different temperature to find minimum hydrotropic concentration. The thermodynamic parameters (free energy, enthalpy and entropy) were evaluated in the temperature range of 30°C-70°C. The free energy decreased with increase in temperature. The aggregation was found to be exothermic in nature and favored by positive value of entropy.
[1] Lee, J., Lee, S. C., Acharya, G., Chang, C. and Park, K.,
"Hydrotropic solubilization of paclitaxel: analysis of chemical
structures for hydrotropic property," Pharm. Res., vol. 20, no. 7, pp.
1022-1030, 2003.
[2] B. M. Khadilkar, V. G. Gaikar and A. A. Chitnavis, "HAqueous
hydrotrope solution as a safer medium for microwave enhanced
hantzsch dihydropyridine ester synthesis,"H Tetrahedron Lett., vol. 36,
no. 44, pp. 8083-8086, 1995.
[3] V. G. Gaikar and P. V. Phatak, "Selective solubilization of isomers in
hydrotrope solutions: o-/p-chlorobenzoic acids and o-/pnitroanilines,"
Sep. Sci. Technol., vol. 34, no. 3, pp. 439-459, 1999.
[4] D. V. Dandekar and V. G. Gaikar, "Hydrotropic extraction of
curcuminoids from turmeric," Sep. Sci. Technol., vol. 38, no. 5, pp.
1185-1215, 2003.
[5] G. Raman and V. G. Gaikar, "Extraction of piperine from Piper
nigrum (black pepper) by hydrotropic solubilization," Ind. Eng.
Chem. Res., vol. 41, no. 12, pp. 2966-2976, 2002.
[6] G. Raman and V. G. Gaikar, "HHydrotropic solubilization of boswellic
acids from boswellia serrata resinH," Langmuir, vol. 19, no. 19, pp.
8026-8032, 2003.
[7] M. Bhat and V. G. Gaikar, "HCharacterization of interaction between
butylbenzene sulfonates and cetyl pyridinium chloride in a mixed
aggregate systemH," Langmuir, vol. 16, no. 4, pp. 1580-1592, 2000.
[8] M. Bhat and V. G. Gaikar, "HCharacterization of interaction between
butyl benzene sulfonates and cetyl trimethylammonium bromide in
mixed aggregate systemsH," Langmuir, vol. 15, no. 14, pp. 4740-4751,
1999.
[9] V. G. Gaikar and M. M. Sharma, "Separations with hydrotropes,"
Sep. Technol., vol. 3, no. 1, pp. 2-11, 1993.
[10] G. Perron and J. E. Desnoyers, "Volumes and heat capacities of
sodium perfluoroalkanoates in water," J. Chem. Eng. Data, vol. 42,
no. 1, pp. 172-178, 1997.
[11] F. Quiron and J. E. Desnoyers, "HA thermodynamic study of the
postmicellar transition of cetyltrimethylammonium bromide in
waterH," J. Colloid Interface Sci., vol. 112, no. 2, pp. 565-572, 1986.
[12] D. Balasubramanian, V. Srinivas, V. G. Gaikar and M. M. Sharma,
"Aggregation behavior of hydrotropic compounds in aqueous
solution," J. Phys. Chem., vol. 93, no. 9, pp. 3865-3870, 1989.
[13] P. Bahadur, J. Parikh and D. Varade, "Adsorption characteristics and
micelle formation of two cationic surfactants and their mixtures in
aqueous solution," Tenside Surf. Det., vol. 40, no. 4, pp. 215-219,
2003.
[14] V. B. Wagle, P. S. Kothari and V. G. Gaikar, "Effect of temperature
on aggregation behavior of aqueous solutions of sodium cumene
sulfonate," J. Mol. Liq., vol. 133, no. 1-3, pp. 68-76, 2007.
[1] Lee, J., Lee, S. C., Acharya, G., Chang, C. and Park, K.,
"Hydrotropic solubilization of paclitaxel: analysis of chemical
structures for hydrotropic property," Pharm. Res., vol. 20, no. 7, pp.
1022-1030, 2003.
[2] B. M. Khadilkar, V. G. Gaikar and A. A. Chitnavis, "HAqueous
hydrotrope solution as a safer medium for microwave enhanced
hantzsch dihydropyridine ester synthesis,"H Tetrahedron Lett., vol. 36,
no. 44, pp. 8083-8086, 1995.
[3] V. G. Gaikar and P. V. Phatak, "Selective solubilization of isomers in
hydrotrope solutions: o-/p-chlorobenzoic acids and o-/pnitroanilines,"
Sep. Sci. Technol., vol. 34, no. 3, pp. 439-459, 1999.
[4] D. V. Dandekar and V. G. Gaikar, "Hydrotropic extraction of
curcuminoids from turmeric," Sep. Sci. Technol., vol. 38, no. 5, pp.
1185-1215, 2003.
[5] G. Raman and V. G. Gaikar, "Extraction of piperine from Piper
nigrum (black pepper) by hydrotropic solubilization," Ind. Eng.
Chem. Res., vol. 41, no. 12, pp. 2966-2976, 2002.
[6] G. Raman and V. G. Gaikar, "HHydrotropic solubilization of boswellic
acids from boswellia serrata resinH," Langmuir, vol. 19, no. 19, pp.
8026-8032, 2003.
[7] M. Bhat and V. G. Gaikar, "HCharacterization of interaction between
butylbenzene sulfonates and cetyl pyridinium chloride in a mixed
aggregate systemH," Langmuir, vol. 16, no. 4, pp. 1580-1592, 2000.
[8] M. Bhat and V. G. Gaikar, "HCharacterization of interaction between
butyl benzene sulfonates and cetyl trimethylammonium bromide in
mixed aggregate systemsH," Langmuir, vol. 15, no. 14, pp. 4740-4751,
1999.
[9] V. G. Gaikar and M. M. Sharma, "Separations with hydrotropes,"
Sep. Technol., vol. 3, no. 1, pp. 2-11, 1993.
[10] G. Perron and J. E. Desnoyers, "Volumes and heat capacities of
sodium perfluoroalkanoates in water," J. Chem. Eng. Data, vol. 42,
no. 1, pp. 172-178, 1997.
[11] F. Quiron and J. E. Desnoyers, "HA thermodynamic study of the
postmicellar transition of cetyltrimethylammonium bromide in
waterH," J. Colloid Interface Sci., vol. 112, no. 2, pp. 565-572, 1986.
[12] D. Balasubramanian, V. Srinivas, V. G. Gaikar and M. M. Sharma,
"Aggregation behavior of hydrotropic compounds in aqueous
solution," J. Phys. Chem., vol. 93, no. 9, pp. 3865-3870, 1989.
[13] P. Bahadur, J. Parikh and D. Varade, "Adsorption characteristics and
micelle formation of two cationic surfactants and their mixtures in
aqueous solution," Tenside Surf. Det., vol. 40, no. 4, pp. 215-219,
2003.
[14] V. B. Wagle, P. S. Kothari and V. G. Gaikar, "Effect of temperature
on aggregation behavior of aqueous solutions of sodium cumene
sulfonate," J. Mol. Liq., vol. 133, no. 1-3, pp. 68-76, 2007.
@article{"International Journal of Chemical, Materials and Biomolecular Sciences:57826", author = "Meghal Desai and Jigisha Parikh", title = "Thermodynamic Study for Aggregation Behavior of Hydrotropic Solution", abstract = "Aggregation behavior of sodium salicylate and sodium cumene sulfonate was studied in aqueous solution at different temperature. Specific conductivity and relative viscosity were measured at different temperature to find minimum hydrotropic concentration. The thermodynamic parameters (free energy, enthalpy and entropy) were evaluated in the temperature range of 30°C-70°C. The free energy decreased with increase in temperature. The aggregation was found to be exothermic in nature and favored by positive value of entropy.
", keywords = "Hydrotropes, Enthalpy, Entropy, Free Energy,Minimum Hydrotropic Concentration.", volume = "3", number = "9", pages = "491-3", }
