A One-Pot Synthesis of a Triblock Copolymer from Propylene Oxide/Carbon Dioxide and Lactide: Intermediacy of Polyol Initiators

Just add water: The copolymerization of propylene oxide and CO2 catalyzed by a cobalt complex is tolerant to the addition of water as chain‐transfer reagent to afford polyols (HO‐(PPC)‐OH) with narrow molecular weight distributions (see picture; PPC=poly(propylene carbonate); PLA=polylactide). The a...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2013-09, Vol.52 (40), p.10602-10606
Main Authors: Darensbourg, Donald J., Wu, Guang-Peng
Format: Article
Language:English
Subjects:
Block copolymers
Carbon dioxide
Carbonates
coordination copolymerization
Copolymerization
lactide
Molecular weight distribution
Polyols
Propylene oxide
ring-opening polymerization
Synthesis
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Summary:Just add water: The copolymerization of propylene oxide and CO2 catalyzed by a cobalt complex is tolerant to the addition of water as chain‐transfer reagent to afford polyols (HO‐(PPC)‐OH) with narrow molecular weight distributions (see picture; PPC=poly(propylene carbonate); PLA=polylactide). The addition of an organocatalyst to these polyols in the presence of lactides produces well‐defined triblock copolymers (PLA‐b‐PPC‐b‐PLA).
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201304778