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This paper analyzes the influence of the chemical structure of a series of oxyethylenated laurylamines (LA-EO) on the formation of complexes with the dye C.I. Direct Red 1, as well as on the dyeing kinetics of the polyamide 66 fibres. The spectrophotometric analysis of the dyebath in the absence and in the presence of different LA-EO has been carried out. The variables studied were the molar ratio...
The thermodynamics of the interactions between the anionic dye Acid Red 88 (AR88) and the cationic surfactant dodecyltrimethylammonium bromide (DTA) in the aqueous solution of the nonionic surfactant Triton X-100 (TX100) at different temperatures has been investigated by using potentiometry. The standard free energy change, ΔG o1 , the standard enthalpy change, ΔH o1 , and...
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