M. Bero et al., Application of zirconium (IV) acetylacetonate to the copolymerization of glycolide with epsilon-caprolactone and lactide, POLYM BULL, 42(2), 1999, pp. 131-139
A study on the copolymerization of glycolide with lactide and glycolide wit
h epsilon-caprolactone was performed in the presence of zirconium (IV) acet
ylacetonate at moderate temperatures (100 degrees and 150 degrees C).
Zirconium acetylacetonate appeared to be an efficient initiator of copolyme
rization. The obtained polymers were characterized by high molecular weight
s. Considerable influence of transesterification on the polymer chain micro
structure was found.