摘要
本文探索了新型表面活性剂(OEMD-20)对三芳甲烷染料C.I.酸性蓝9(AB9)在水溶液中聚集行为的影响,考察了染料和表面活性剂之间的相互作用。紫外-可见光谱研究结果表明:AB9在水中的聚集导致其最大吸收波长蓝移;在CMC以下,OEMD-20与AB9分子通过静电引力形成离子对,不影响其最大吸收波长;在CMC以上,OEMD-20与AB9的相互作用导致其最大吸收波长红移,染料分子通过静电引力进入表面活性剂的胶束,彼此间被隔离起来,防止了染料分子间的相互作用。
The effects of a surfactant OEMD-20 on aggregation of C.I.Acid Blue 9(AB9) were studied,and the interaction between the dye and the surfactant was investigated.The determination of UV-vis spectroscopy showed that the dye λmax assumed a hypsochromic shift with the aggregation of AB9;OEMD-20 and AB9 formed an ion-pair by electrostatic attraction when the concentration of OEMD-20 below its CMC,and its λmax unchanged;the dye λmax assumed a bathochromic shift due to the interaction between OEMD-20 and AB9 when the concentration of OEMD-20 above its CMC;the interaction between AB9 was prohibited and the dye molecules were isolated when the dye molecules move to the surface of OEMD-20 micelle or go into the micelle by electrostatic attraction.
出处
《染料与染色》
CAS
2012年第6期51-53,36,共4页
Dyestuffs and Coloration
