Block and Random Copolymerization of epsilon-Caprolactone, L-, and rac-Lactide Using Titanium Complex Derived from Aminodiol Ligand
PERUCH, Frédéric
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
PERUCH, Frédéric
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
< Réduire
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
Langue
en
Article de revue
Ce document a été publié dans
Journal of Polymer Science Part A: Polymer Chemistry. 2012, vol. 50, n° 11, p. 2161-2171
Wiley
Résumé en anglais
A series of di- and triblock copolymers [poly(L-lactide-b-epsilon-caprolactone), poly(D, L-lactide-b-epsilon-caprolactone), poly (epsilon-caprolactone-b-L-lactide), and poly(epsilon-caprolactone-b-L-lactide-b-epsilon-cap ...Lire la suite >
A series of di- and triblock copolymers [poly(L-lactide-b-epsilon-caprolactone), poly(D, L-lactide-b-epsilon-caprolactone), poly (epsilon-caprolactone-b-L-lactide), and poly(epsilon-caprolactone-b-L-lactide-b-epsilon-caprolactone)] have been synthesized successfully by sequential ring-opening polymerization of epsilon-caprolactone (epsilon-CL) and lactide (LA) either by initiating PCL block growth with living PLA chain end or vice versa using titanium complexes supported by aminodiol ligands as initiators. Poly(trimethylene carbonate-b-epsilon-caprolactone) was also prepared. A series of random copolymers with different comonomer composition were also synthesized in solution and bulk of epsilon-CL and D, L-lactide. The chemical composition and microstructure of the copolymers suggest a random distribution with short average sequence length of both the LA and epsilon-CL. Transesterification reactions played a key role in the redistribution of monomer sequence and the chain microstructures. Differential scanning calorimetry analysis of the copolymer also evidenced the random structure of the copolymer with a unique T-g.< Réduire
Mots clés en anglais
titanium complexes
block copolymers
cyclic esters
cyclic carbonate
polyesters
random copolymers
ring-opening polymerization
Origine
Importé de halUnités de recherche