Bola电解质对阳离子染料在腈纶上吸附和扩散的影响

Influence of Bolaform Electrolytes on Cationic Dyes Sorption by Acrylic Fibres

本文采用不同中间烷链长度的苄基季铵盐和吡啶季铵盐Ｂｏｌａ电解质作为腈纶染色的新 型缓染剂，研究了它们对阳离子染料在腈纶纤维上的上染速度和扩散系数及其浓度对阳离子染料平衡 上染量的影响，运用 Ｌａｎｇｍｕｉｒ和 Ｎｅｒｎｓｔ二元吸附模型对吸附等温线进行了分析，并探讨了 Ｂｏｌａ电解 质对二元吸附参数的影响。

Two bolaform electrolytes, DCBzn and DCPyn having bisbenzyl and bispyrinium groups respectively,were used as the new retarders in the dying of acrylic fibres with cationic dyes. The influence of bolaform electrolytes was investigated on the dyeing rate and diffussion coefficient of Rhodamine B on acrylic fibres. The experimental isotherms were analysed by a Langmuir and Nernst dual sorption mechanism,and the influence of bolaform electrolytes on dual sorption parameters was discussed.