A magnesium complex of the type ONNNMg-HMDS wherein ONNN is a sequential tetradentate monoanionic ligand is introduced. In the presence of an alcohol initiator this complex catalyzes the living and immortal homopolymerization of the lactide enantiomers and ϵ-caprolactone at room-temperature with exceptionally high activities, as well as the precise block copolymerization of these monomers in a one-pot synthesis by sequential monomer addition. Copolymers of unprecedented microstructures such as the PCL-b-PLLA-b-PDLA and PDLA-b-PLLA-b-PCL-b-PLLA-b-PDLA block–stereoblock microstructures that feature unique thermal properties are readily accessed.

Block–Stereoblock Copolymers of Poly(ϵ-Caprolactone) and Poly(Lactic Acid)

NAVARRA, WANDA
Membro del Collaboration Group
;
Venditto, Vincenzo
Conceptualization
;
KOL, MOSHE
Supervision
2018

Abstract

A magnesium complex of the type ONNNMg-HMDS wherein ONNN is a sequential tetradentate monoanionic ligand is introduced. In the presence of an alcohol initiator this complex catalyzes the living and immortal homopolymerization of the lactide enantiomers and ϵ-caprolactone at room-temperature with exceptionally high activities, as well as the precise block copolymerization of these monomers in a one-pot synthesis by sequential monomer addition. Copolymers of unprecedented microstructures such as the PCL-b-PLLA-b-PDLA and PDLA-b-PLLA-b-PCL-b-PLLA-b-PDLA block–stereoblock microstructures that feature unique thermal properties are readily accessed.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11386/4717496
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