Adiabatic anionic polymerization of caprolactam in the presence of N‐acylated caprolactam macroactivator: Kinetic study

Jen‐Long ‐L Yeh, Jen‐Feng ‐F Kuo, Chuh-Yung Chen

研究成果: Article同行評審

14 引文 斯高帕斯(Scopus)

摘要

In this study, bis ϵ‐caprolactam bis‐diphenyl methane diisocyanate polypropylene glycol 1000 used as the macroactivator was prepared and well characterized prior to use. The anionic polymerization of ϵ‐caprolactam with the macroactivator as a function of the macroactivator concentration was adiabatically carried out. The adiabatic temperature rise method as well as the macrokinetics were used for elucidation of the kinetics of the polymerization. A nonlinear regression technique was used for determining the parameters of the macrokinetic equation. The equilibrium conversion and equilibrium time obtained were 94–96% and 2–9 min depending on the macroactivator concentration. The effects of the concentrations of macroactivator and ϵ‐caprolactam on the initial rate, apparent overall reaction rate, and the empirical parameters were studied. A side reaction induced by the transfer of the proton in the isocyanurate group of the macroactivator to caprolactam anion was found. According to this finding, a new reaction kinetic model was proposed by properly modifying the macrokinetic equation. © 1993 John Wiley & Sons, Inc.

原文English
頁(從 - 到)1671-1681
頁數11
期刊Journal of Applied Polymer Science
50
發行號10
DOIs
出版狀態Published - 1993 1月 1

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 表面、塗料和薄膜
  • 聚合物和塑料
  • 材料化學

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