染料聚醚衍生物及聚醚的分散染料表面吸附性能

Adsorption of dye-polyether derivatives and polyethers on disperse dye surface

研究染料聚醚衍生物和聚醚在染料颗粒表面的吸附行为,借助分子模拟方法在分子尺度上了解染料聚醚衍生物及聚醚分子结构与染料表面的相互作用关系,从而揭示上述聚合物的吸附机理。结果表明,染料聚醚衍生物和聚醚在染料表面的吸附等温线均为Langmuir型,染料聚醚衍生物由于可与染料表面形成π-π堆积作用,且主要为平行和T型堆积排列方式,因而其最大吸附量、与染料表面的相互作用能和吸附能均大于相应的聚醚。

Adsorption behaviors of dye-polyether derivatives and polyethers on the surface of dye particles are investigated. The interaction of molecular structure of polymer and the dye surface is researched with the help of molecular modeling methods on the molecular scale, and the adsorption mechanism is unveiled. The results show that adsorption isotherms of these polymers on the dye surface are in accordance with Langmuir type. As π-π stacking with mainly parallel type and T type, can be formed between the dye-polyether derivatives and the dye surface, the maximum adsorbed amounts, the interaction energy and the adsorption energy of dye-polyether derivatives are greater than those of their polyether counterparts.