The Effects of Alkali and Temperature on the Hydrolysis Rate of N-methylpyrrolidone

[摘要] By studying the hydrolysis of N-methylpyrrolidone, it was found that the effects of NaOH concentration and temperature on N-methylpyrrolidone's hydrolysis were remarkable. Fourier transform infrared (FTIR) and Gel Permeation Chromatography (GPC) detected that the mainly hydrolyzate was 4-(methylamino)butyric acid, and the hydrolyzate can generate polymers, which of molecular weight increases with temperature rising. The results of Gas Chromatography (GC) and moisture meter test showed that adding alkaline and raising temperature can aggravate hydrolysis of NMP. This study provide theoretical basis for recycling solvent (NMP) in the production of polyphenylene sulfide (PPS).

[发布机构] School of Pectrochemical Engineering, Lanzhou University of Technology, Lanzhou; 730050, China^1

[关键词] Fourier transform infrared;Gel permeation chromatography (GPC);Hydrolysis rate;N-methylpyrrolidone;NaOH concentration;Polyphenylene sulfides;Temperature rising