The kinetics of hydrolytic polymerization of ε-caprolactam. V. Equilibrium data on cyclic oligomers

✍ Scribed by Kazuo Tai; Takashi Tagawa

• Publisher: John Wiley and Sons
• Year: 1982
• Tongue: English
• Weight: 311 KB
• Volume: 27
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1982.070270805

✦ Synopsis

Abstract

The concentrations of the cyclic oligomers (C~i~; i = 3, 4, 5, and 6) in the polymeric products of ε‐caprolactam were determined by high‐performance liquid chromatography. The equilibrium data on the oligomers were obtained as a function of the polymerization temperature and initial water concentration. The concentration of each oligomer in the equilibrated polymer was found to increase with the temperature and/or initial water concentration. A set of the kinetic equations to express the oligomer formation during the polymerization was also proposed.