Thermodynamic properties of ibuprofen sodium salt in aqueous/urea micellar solutions at 298.15 K |
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| Authors: | Naved Azum Abdullah M Asiri Malik Abdul Rub Abdulrahman O Al-Youbi |
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| Institution: | 1.Center of Excellence for Advanced Materials Research,King Abdulaziz University,Jeddah,Saudi Arabia;2.Chemistry Department, Faculty of Science,King Abdulaziz University,Jeddah,Saudi Arabia |
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| Abstract: | Thermodynamic, surface and micellar properties of anti-inflammatory drug sodium 2-(4-isobutylphenyl) propionate (sodium salt of ibuprofen (NaIBF)) in aqueous/urea solution were studied by surface tension measurements at 298.15 K in the presence of anionic surfactant sodium dodecylsulfate (SDS). Critical micelle concentration (cmc), surface tension at cmc (γcmc), maximum Gibbs surface excess (Γmax), minimum surface area per surfactant molecule at the air/water interface (A min) etc. were determined in pure water as well as in aqueous urea solution. The theories of Clint, Rosen and Rubingh have been applied to describe the interactions between these amphiphiles at the interface and in the micellar solution. Various thermodynamic parameters have been calculated and discussed in detail. |
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