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Copolymerization of Cyclic Esters at the Living Polymer‐Monomer Equilibrium
Author(s) -
Duda Andrzej,
Libiszowski Jan,
Mosnáček Jaroslav,
Penczek Stanisław
Publication year - 2005
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200550811
Subject(s) - copolymer , monomer , polymer chemistry , polymer , transesterification , polymerization , ring opening polymerization , molar ratio , materials science , chemistry , catalysis , organic chemistry
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.