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The kinetics of hydrolytic polymerization of ε‐caprolactam. V. Equilibrium data on cyclic oligomers
Author(s) -
Tai Kazuo,
Tagawa Takashi
Publication year - 1982
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1982.070270805
Subject(s) - oligomer , caprolactam , polymerization , kinetics , hydrolysis , polymer , polymer chemistry , monomer , materials science , chemistry , chemical engineering , thermodynamics , organic chemistry , physics , quantum mechanics , engineering
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.