季铵盐表面活性剂溶液中阴离子偶氮染料的光谱研究  

Analysis of Anionic Azo Dye in Quaternary Ammonium Surfactant Solutions by Spectroscopy

作　　者：王松营 刘学民 王宋 聪陆 敏陈 恩寿 

机构地区：[1]江南大学化学与材料工程学院

出　　处：《光谱实验室》2011年第3期1232-1235,共4页Chinese Journal of Spectroscopy Laboratory

摘　　要：通过紫外-可见光谱法研究了阴离子偶氮染料甲基橙(MO)与3种季铵盐表面活性剂之间的相互作用。当表面活性剂浓度远低于临界胶束浓度(CMC)时,表面活性剂与染料形成聚集体,反映为吸收带蓝移并伴随着吸收强度下降。继续加入表面活性剂,引起染料在阳离子胶束中的特征吸收。当表面活性剂浓度达到CMC及以上时,混合溶液的λmax蓝移距离减小并伴随着吸收强度急剧增加。The interactions of anionic azo dyemethyl orange（MO）,with three kinds of quaternary ammonium surfactants were investigated by UV-Vis spectroscopy.The aggregation of surfactant and dye took place,when surfactant concentrations were far below the critical micelle concentration（CMC）.The reaction obtained hypsochromic shift of absorption band with intensity of absorption decreasing.Further addition of surfactant caused an characteristic absorption spectrum for the dye in the presence of cationic micelles.The hypsochromic shifts for λmax of mixtures solution decreased with intensity of the absorption sharp increasing,when surfactant concentrations exceeded CMC.

关 键 词：季铵盐表面活性剂 阴离子偶氮染料 紫外-可见光谱 相互作用 

分 类 号：O657.32[理学—分析化学]