Interactions between Cationic Starch and Anionic Surfactants
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Coductometric studies of the interaction of acid green 25 with cationic alkyltrimethylammonium bromid surfactants
The interactions between an anionic dye, Acid Green 25 AG and the two cationic surfactants tetradecyltrimethylammonium bromide TTAB, and hexadecyltrimethylammonium bromide CTAB in aqueous solutions far below the CMC are studied using the conductometric method at different temperature. The equilibrium constants and other thermodynamic functions for the process of dye-surfactant ion pair formatio...
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The interactions of cationic starch (CS, degree of substitution=0.8)/mixed anionic surfactant/water systems were investigated. The surfactants investigated were sodium dodecyl sulphate (SDS), sodium octanoate (NaOct), sodium decanoate (NaDe), sodium dodecanoate (NaDod), sodium oleate (NaOl ) and sodium erucate (NaEr). The concentration of CS varied from 0.001 to 10 wt.%. The effect of mixing on...
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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 refl...
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