染料与表面活性剂的相互作用

本文用光谱法研究了阴离子染料曙红(EY)与非离子表面活性剂TX-100)的相互作用, 得出相互作用常数K及与一个染料分子结合的表面活性剂分子数N, 也研究了两种添加剂(尿素, Na2SO4)及混合胶团对这种相互作用的影响并作了解释。

The interaction between surfactants and Dye

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.