Fibre Chemistry

, Volume 38, Issue 6, pp 443–446 | Cite as

Condensation equilibrium in the polycaproamide—water—LiCl system

  • Yu. M. Bazarov
  • L. N. Mizerovskii
Chemistry and Technology of Chemical Fibres


It was found that in the conditions of hydrolytic polymerization of caprolactam, the equilibrium degree of polymerization of the polymer obtained decreases significantly with an increase in the LiCl content from 1 to 5 wt. %. It was shown that the regulating effect of this electrolyte can be quantitatively described in hypothesizing the existence of the following equilibrium in the melt \( - NH_2 + Li^ + \mathop \leftrightarrow \limits^{K_1 } - ^ + NH_2 Li\) with a constant equal to 6.7–12.6 base-mole/mole at 523 K and melt equilibrium moisture content of 6.5·10−2 mole/base-mole.


LiCl Lithium Chloride Caprolactam Molecular Weight Regulator Equilibrium Degree 
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Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  • Yu. M. Bazarov
    • 1
  • L. N. Mizerovskii
    • 2
  1. 1.Ivanovo State Chemical Engineering UniversityIvanovo
  2. 2.Institute of Chemistry of SolutionRussian Academy of SciencesIvanovo

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