Determination of critical micelle concentration of cetyltrimethylammonium bromide: Different procedures for analysis of experimental data
| Autor: | M Jelena Goronja, D Natasa Pejic, M Andjelija Malenovic, M Aleksandra Janosevic-Lezaic, R Dragomir Stanisavljev, M Biljana Dimitrijevic |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
conductometry
critical micellar concentration Conductometry 010405 organic chemistry Chemistry General Chemical Engineering Significant difference Analytical chemistry 02 engineering and technology General Chemistry Conductivity 021001 nanoscience & nanotechnology lcsh:Chemical technology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound cetyltrilmethyammonium bromide Bromide Critical micelle concentration acetonitrile-water mixture lcsh:TP1-1185 0210 nano-technology Acetonitrile Second derivative |
| Zdroj: | Hemijska Industrija, Vol 70, Iss 4, Pp 485-492 (2016) Hemijska industrija |
| ISSN: | 2217-7426 |
| Popis: | Conductivity of two micellar systems was measured in order to determine critical micelle concentration (CMC) of cetyltrimethylammonium bromide (CTAB). Those systems were: CTin water and CTin binary mixture acetonitrile (ACN)-water. Conductivity (?)-concentration (c) data were treated by four different methods: conventional method, differential methods (first and second derivative) and method of integration (methods A-D, respectively). As CTin water micellar system shows a sharp transition between premicellar and postmicellar part of the ?/c curve, any of the applied methods gives reliable CMC values and there is no statistically significant difference between them. However, for CTin ACN-water mixture micellar system the integration method for CMC determination is recommended due to a weak curvature of ?/c plot. |
| Databáze: | OpenAIRE |
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