一种Gemini型阴离子表面活性剂与阳离子染料相互作用的研究  

Interaction between Cationic Dye and an Anionic Gemini Surfactant

作　　者：肖小峰 蔡永晨 许虎君 Xiao Xiaofeng;Cai Yongchen;Xu Hujun(Lianshui Xinyuan Biotechnology Co.Ltd,Huaian 223400,Jiangsu,China;School of Chemical&Material Engineering,Jiangnan University,Wuxi 214122,Jiangsu,China)

机构地区：[1]涟水新源生物科技有限公司,江苏淮安223400 [2]江南大学化学与材料工程学院,江苏无锡214122

出　　处：《中国洗涤用品工业》2020年第8期35-40,共6页China Cleaning Industry

摘　　要：用紫外-可见分光光度计从分子角度上认识了阳离子染料亚甲基蓝(MB)与阴离子表面活性剂N,N-双十二烷基-2,6-吡啶二酰胺丙酸钠(DLP-12)的相互作用机理。在此基础上考察了NaCl和羟丙基-β-环糊精(HP-β-CD)对MB/DLP-12复合体系的影响。结果表明,MB与DLP-12之间可以通过静电作用发生分子之间的相互聚集。一方面,NaCl能促进DLP-12形成胶束,导致因静电作用与DLP-12相结合的MB分子增溶到表面活性剂胶束的内核中去。另一方面,NaCl能屏蔽MB与DLP-12之间的静电作用;而HP-β-CD能与DLP-12分子的疏水链因疏水作用而相互缠绕,导致吸收光谱的变化。The interaction mechanism between cationic dye methylene blue(MB)and anionic surfactant DLP-12 was studied by UV-Vis spectrophotometer.On this basis,the effects of NaCl,ethanol and HP-β-CD on MB/DLP-12 composite system were also investigated.The results showed that the aggregation of molecules between MB and DLP-12 could take place through electrostatic interaction.On one hand,sodium chloride could promote DLP-12 to form micelles,resulting in the solubilization of MB molecules combined with DLP-12 to the core of surfactant micelles,on the other hand,NaCl can shield the electrostatic interaction between MB and DLP-12;while HP-β-CD can twine with the hydrophobic chain of DLP-12 due to hydrophobic interaction,leading to the changes in the absorption spectrum.

关 键 词：静电作用 亚甲基蓝 阴离子表面活性剂 吸收光谱 复合体系 

分 类 号：TQ423[化学工程]