含胺功能基团离子液体表面活性剂的合成及性能

Amine functional ionic liquid surfactant:synthesis and property investigation

本文研究了三种含胺功能基团的离子液体表面活性剂的合成方法,并利用红外光谱仪和滴体积法对其官能团结构和水溶液表面张力进行表征。结果表明,表面活性剂在波数1338、1234、1465和3142cm-1处具有咪唑环的C-N、C-H特征吸收峰,具备离子液体的结构特征。表面张力等温曲线证实,随着碳链的增长,临界胶束浓度(CMC)越来越小,CMC所对应的表面张力越来越大,饱和吸附量(Γ)越来越小,最小单分子面积(Amin)越来越大。

This paper studied the method that three types of ionic liquid surfactants can be synthesized by direct approach, the structure of functional group and the surface tension of aqueous solution were characterized by fourier transform infrared spectroscopy（FTIR） and drop volume technique. The test results showed that the surfacrants would have two C-N peaks and two C-H peaks in the 1338,1234,1465and 3142cm-1 proves that the surfaetant have ionic liquid peculiarities. The surface tension isothermal curves showed that CMC became lower, the γ CMC became srtonger,Г became lower and Amin became larger with the length of carbon chain increases.