The interaction of Congo Red CR with a series of Alkyltrimethylamoniumbromide CnTAB, N-hexadecylpyridinium bromide CPB and N-hexadecylpyridinium CPC were investigated using conductometry technique. It was observed that the formation of dye-surfactant ion pairs takes place at surfactant concentration far below the critical micelle concentration of the individual surfactants. Aggregation was reflected by the appearance of a break point at conductometry plots. The equilibrium constant and other thermodynamic parameters for the ion pair formation were calculated on the basis of a theoretical model using the data obtained by conductometry. The reaction between dye and surfactants was revealed to be an enthalpy-driven reaction which is highly dependent on temperature and the structures of both dye and surfactant.
Javadian Farzaneh, S., Hooshmand, F., & Asadzadeh Shahir, A. (2011). Aggregation of an anionic azo dye with conventional cationic surfactants in premicellar region: A conductometric study. Progress in Color, Colorants and Coatings, 4(2), 121-128. doi: 10.30509/pccc.2011.75786
MLA
S. Javadian Farzaneh; F. Hooshmand; A. Asadzadeh Shahir. "Aggregation of an anionic azo dye with conventional cationic surfactants in premicellar region: A conductometric study", Progress in Color, Colorants and Coatings, 4, 2, 2011, 121-128. doi: 10.30509/pccc.2011.75786
HARVARD
Javadian Farzaneh, S., Hooshmand, F., Asadzadeh Shahir, A. (2011). 'Aggregation of an anionic azo dye with conventional cationic surfactants in premicellar region: A conductometric study', Progress in Color, Colorants and Coatings, 4(2), pp. 121-128. doi: 10.30509/pccc.2011.75786
VANCOUVER
Javadian Farzaneh, S., Hooshmand, F., Asadzadeh Shahir, A. Aggregation of an anionic azo dye with conventional cationic surfactants in premicellar region: A conductometric study. Progress in Color, Colorants and Coatings, 2011; 4(2): 121-128. doi: 10.30509/pccc.2011.75786
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