Using a Combination of Experimental and Mathematical Method To Explore Critical Micelle Concentration of a Cationic Surfactant
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2016
Authors
Goronja, JelenaPejić, Nataša

Janošević-Ležaić, Aleksandra

Stanisavljev, Dragomir

Malenović, Anđelija

Article (Published version)

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Show full item recordAbstract
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 hexadecyttrirnethylammonium bromide (cetyltrimethylammonium bromide, CTAB) in binary mixture of water and acetonitrile (ACN) as a cosolvent (10%, v/v) at 30.0 degrees 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.
Source:
Journal of Chemical Education, 2016, 93, 7, 1277-1281Publisher:
- Amer Chemical Soc, Washington
Projects:
DOI: 10.1021/acs.jchemed.5b00913
ISSN: 0021-9584