罗丹明6G表面活性的研究  

Study on the Surfactant Feature of Rhodamine 6G

作　　者：张建华[1] 崔秋红[1] 王玉兴[1] 赵进[2] 

机构地区：[1]钢铁研究总院分析测试研究所,北京100081 [2]北京轻工业学院,北京100037

出　　处：《冶金分析》2000年第2期22-25,共4页Metallurgical Analysis

摘　　要：发现罗丹明类碱性染料是表面活性物质。罗丹明 6G溶液的浓度约为 4 48× 1 0 - 3mol/L时 ,开始出现胶束 ,临界胶束浓度 (CMC)值为 2 0 9× 1 0 - 3mol/L。研究认为 ,在γ -lgC曲线的转变区前 ,只有单体和聚合体存在 ,没有胶束。溶液浓度高于CMC后 ,溶液中除胶束外 ,几乎不存在单体和聚合体 ,同时 ,胶束的聚集数不变 ,浓度增加时 ,除增加胶束的数量外 。It was found that Rhodamine 6G (RD 6G) is a kind of surfactant. RD 6G in solution begins to form micelles when its concentration is 4.48×10 -3 mol/L. The CMC value of RD 6G is 2.09×10 -3 mol/L. Only the monomer and polymer of RD 6G exist in the solution before the transient point of γ-lgC curve. When its concentration is higher than the value of CMC, then almost did not exist monomer and polymer, but the micelle of RD 6G in the solution, meanwhile the assemble number of micelles will be unchanged. The amount of micelles will be increased and the tightness of micelle will be also strengthened as the concentration of RD 6G is increasing.

关 键 词：罗丹明6G 表面活性剂 显色剂 分光光度法 

分 类 号：O657.32[理学—分析化学]