Using a Combination of Experimental and Mathematical Method To Explore Critical Micelle Concentration of a Cationic Surfactant
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Jelena Goronja [1] ; Nataša Pejić [2] ; Aleksandra Janošević Ležaić [2] ; Dragomir Stanisavljev [1] ; Anđelija Malenović [1]
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[1] University of Belgrade
University of Belgrade
Serbia
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[2] Faculty of Pharmacy, Serbia
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- Localización: Journal of chemical education, ISSN 0021-9584, Vol. 93, Nº 7, 2016, págs. 1277-1281
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
An undergraduate electrical conductivity measurement experiment in a physical chemistry lab and basic fitting procedures are presented that allow a characterization of micellar system of hexadecyltrimethylammonium bromide (cetyltrimethylammonium bromide, CTAB) in binary mixture of water and acetonitrile (ACN) as a cosolvent (10%, v/v) at 30.0 °C. Conductivity–concentration data were processed by inbuilt function of ORIGIN software to attain the values of critical micelle concentration by method of integration. Acquiring the data-fitting skills that are developed through the addition of a computational tool to a conventional electrical conductometry experiment has a general significance for its applications to more complex upper-level experiments with the aim to process data and perform fast calculations and graphics.
