丙烯腈聚合行为的谱学研究

Study on Polymerization of Acrylonitrile by Spectral Analysis

应用FT-IR、1H-NMR、13C-NMR法对丙烯腈聚合物——聚丙烯腈(PAN)的结构进行了表征。图谱分析结果表明:在该实验条件下,PAN分子中既有头-尾相接形成的聚合物链段,又有头-头相接或尾-尾相接形成的聚合物链段,且二者的比例接近1∶1。同时PAN分子中还存在着少量腈基水解产物酰胺基和羧基。

Spectral analysis, such as FT-IR,^1H-NMR,^13C-NMR, are used to characterize the mierostrueture of polymer of aerylonitrile in this paper. The results show that both the microstructure connected by head with tail and connected by head with head or tail with tail are exist. And the ratio of the former with the latter is nearly 1 ： 1. A small amount of carboxy group and carboxamido-group, which are hydrolyzate of nitrile grouping, can be found in PAN.