Ring-Opening Polymerization of L-Lactide Catalyzed by an Organocatalytic System Combining Acidic and Basic Sites - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Macromolecules Année : 2010

Ring-Opening Polymerization of L-Lactide Catalyzed by an Organocatalytic System Combining Acidic and Basic Sites

Résumé

In this study, organocatalytic systems containing both basic and acidic sites, which can activate simultaneously the chain end and the monomer, were investigated in the ring-opening polymerization of L-lactide. To this end, equivalent amounts of (N,N-dimethylamino)pyridine (DMAP) and of its protonated form (DMAP center dot HX) were used as a dual catalytic system for L-lactide polymerization initiated by different alcohols. It is shown that the corresponding DMAP/DMAP center dot HX systems are significantly more active than DMAP alone, and yield well-controlled poly(L-lactide). Depending on the reaction conditions, the transesterification reaction can be prevented.
Fichier non déposé

Dates et versions

hal-00679127 , version 1 (14-03-2012)

Identifiants

Citer

Joji Kadota, Drazen Pavlovic, Jean-Pierre Desvergne, Brigitte Bibal, Frédéric Peruch, et al.. Ring-Opening Polymerization of L-Lactide Catalyzed by an Organocatalytic System Combining Acidic and Basic Sites. Macromolecules, 2010, 43 (21), pp.8874-8879. ⟨10.1021/ma101688d⟩. ⟨hal-00679127⟩
220 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More