关键词: 尿素, 非离子表面活性剂, 硫酸钠, ＴＲＩＴＯＮ Ｘ-１００, 相互作用, 添加剂, 阴离子染料, 曙红

The interaction of the dye Eosine Y (I) and the nonionic surfactant Triton X 100 was studied by spectrometry. The equilibrium constant K and the no. of surfactant mols. bound to the dye mol. N were obtained. The presence of Na2SO4 as additive enhanced the dye-surfactant interaction, whereas the presence of urea weakened the interaction. Ionic surfactant having the same charge as that of I decreased the interaction between them due to electrostatic repulsion, while ionic surfactant having opposite charge to I increased the interaction.

Key words: UREA, NON IONIC SURFACTANTS, SODIUM SULFATE, TRITON X-100, INTERACTIONS, ADDITIVE AGENTS, ANIONIC DYES, EOSINE