Article

Copolymerization of Cyclic Esters at the Living Polymer-Monomer Equilibrium

  1. Andrzej Duda1,
  2. Jan Libiszowski1,
  3. Jaroslav Mosnáček2,
  4. Stanisław Penczek1

Article first published online: 20 JUN 2005

DOI: 10.1002/masy.200550811

Issue

Macromolecular Symposia

Macromolecular Symposia

Special Issue: Polymer Chemistry, Reactions and Processes

Volume 226, Issue 1, pages 109–120, May 2005

Additional Information

How to Cite

Duda, A., Libiszowski, J., Mosnáček, J. and Penczek, S. (2005), Copolymerization of Cyclic Esters at the Living Polymer-Monomer Equilibrium. Macromol. Symp., 226: 109–120. doi: 10.1002/masy.200550811

Author Information

  1. 1

    Department of Polymer Chemistry, Center of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland

  2. 2

    Polymer Institute, Center of Excellence for Degradation of Biopolymers, Slovak Academy of Sciences, 842-36 Bratislava, Dubrovska cesta 9, Slovak Republic

Publication History

  1. Issue published online: 20 JUN 2005
  2. Article first published online: 20 JUN 2005

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Keywords:

  • γ-butyrolactone;
  • ϵ-caprolactone;
  • copolymerization;
  • kinetics (polym.);
  • L,L-lactide;
  • ring-opening polymerization;
  • thermodynamics (polym.)

Abstract

This paper gives a short review of our findings related to the copolymerization of γ-butyrolactone (B) and L,L-lactide (L) with ϵ-caprolactone (C) at or below B and L equilibrium concentrations in homopolymerization. We show, contrary to the commonly established opinions, that: (i) B effectively undergoes ring-opening reaction and therefore is able to high molar copolymers formation containing up to 50 mol-% repeating units derived from B and (ii) in conditions eliminating transesterification living poly(L) does initiate polymerization of C leading to poly(L)-block-poly(C) copolymer.

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