关键词: 在线红外;咪唑啉;酰胺

Abstract:

With a special structure containing two nitrogen atoms in its fivemembered heterocyclic ring, imidazoline may become a new chemical with special feature by introducing other functional groups during its synthesis process. It is the hotspot research in the field of synthesis of functional macromolecule materials at present. In this paper, imidazoline was synthesized by stearic acid and diethylenetriamine, and a series of functional groups spectrum during the reaction process were obtained by using the react IR analytical system (React IR^TM). By analyzing the changes of spectrum of the characteristic functional groups, the mechanism and process of synthesis reaction were discussed. The results showed that the mixing process of raw materials at the initial process was a physicochemical reaction process, and there was a lowest value area of the target product in the reaction process. As a result, the reaction of introducing other functional groups to this functional group should not take place in this lowest value area.

Key words: React IR^TM; imidazoline; acylami