水溶液中染料聚醚衍生物的性能

Property of dye-polyether derivatives in aqueous solutions

采用表面张力法、荧光光谱法和动态光散射法研究了染料聚醚衍生物在水溶液中的性质,包括表面活性、微极性、临界胶束浓度、单个吸附分子所占面积和胶束动力学直径等,推测了其形成胶束结构形态,并与相应聚醚进行对比。结果表明,染料聚醚衍生物的表面活性比聚醚更高,在质量浓度大于0.5 g/L的水溶液中可形成稳定的动力学直径在50～150 nm的胶束,其胶束结构疏松,内部被水分子高度溶胀。

Surface tension method, steady-state fluorescence spectroscopy, and dynamic light scattering method are used to characterize the properties of dye-polyether derivatives in aqueous solutions. Their surface activity, micropolarity, critical mi- celle concentration （CMC）, area per adsorbed molecule, and micelle hydrodynamic diameter are compared with the corre- sponding polyether. The morphology of micelle aggregates is also speculated. The results show that dye-polyether derivatives have higher surface activity than polyether. When the concentration of dye-polyether derivatives is over 0.5 g/L, they can form stable, larger aggregates with a hydrodynamic diameter of 5-150 nm in aqueous solution, and the speculated micelle structure is loose packing and highly swollen by large amount of water inside its core.