COORDINATION POLYMERIZATION OF LACTIDES .5. INFLUENCE OF LACTIDE STRUCTURE ON THE TRANSESTERIFICATION PROCESSES IN THE COPOLYMERIZATION WITH EPSILON-CAPROLACTONE

Authors
BERO M KASPERCZYK J
Citation
M. Bero et J. Kasperczyk, COORDINATION POLYMERIZATION OF LACTIDES .5. INFLUENCE OF LACTIDE STRUCTURE ON THE TRANSESTERIFICATION PROCESSES IN THE COPOLYMERIZATION WITH EPSILON-CAPROLACTONE, Macromolecular chemistry and physics, 197(10), 1996, pp. 3251-3258
Citations number
12
Categorie Soggetti
Polymer Sciences
Journal title
Macromolecular chemistry and physics → ACNP
ISSN journal
10221352
Volume
197
Issue
10
Year of publication
1996
Pages
3251 - 3258
Database
ISI
SICI code
1022-1352(1996)197:10<3251:CPOL.I>2.0.ZU;2-V
Abstract
The influence of lactide configuration on the chain microstructure of lactide/epsilon-caprolactone copolymer was investigated. The copolymer ization was carried out in the pre presence of Al(acac)(3), AlEt(3) an d ZnEt(2) as initiators. The chain microstructure analysis of the copo lymers was performed by means of C-13 NMR spectroscopy. The effect of lactide configuration on the transesterification and randomization of the copolymer chain was determined. The contribution of transesterific ation processes in the case of D,L-lactide was found to be considerabl y higher than that observed when L,L-lactide was used.