✦ LIBER ✦
Yttrium Complexes as Catalysts for Living and Immortal Polymerization of Lactide to Highly Heterotactic PLA
✍ Scribed by Abderramane Amgoune; Christophe M. Thomas; Jean-François Carpentier
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 157 KB
- Volume
- 28
- Category
- Article
- ISSN
- 1022-1336
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Amino‐alkoxy‐bis(phenolate) yttrium complexes act in the presence of an excess of alcohol (up to 50 equiv. vs. Y) as highly active and stereoselective catalysts for rac‐lactide and rac‐β‐butyrolactone polymerizations. These versatile systems enable the production of large quantities of polymer with small amounts of catalyst, optimizing productivity, and also allow the preparation of polymers with functional end groups, which may be employed as intermediates for macromolecular engineering applications.
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