The Unique Versatility of the Double Metal Cyanide (DMC) Catalyst: Introducing Siloxane Segments to Polypropylene Oxide by Ring‐Opening Copolymerization

The combination of hydrophobic polydimethylsiloxane (PDMS) blocks with hydrophilic polyether segments plays a key role for silicone surfactants. Capitalizing on the double metal cyanide (DMC) catalyst, the direct (i.e., statistical) copolymerization of cyclic siloxanes and epoxides is shown to be fe...

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Bibliographic Details
Published in:Macromolecular rapid communications. 2021-03, Vol.42 (5), p.e2000542-n/a
Main Authors: Mohr, Rebecca, Wagner, Manfred, Zarbakhsh, Sirus, Frey, Holger
Format: Article
Language:English
Subjects:
Catalysts
Chemical synthesis
Contact angle
Copolymerization
Copolymers
Cyanides
DMC catalysis
Epoxides
Glass transition
hexamethylcyclotrisiloxane D 3
Hydrophobicity
Magnetic resonance spectroscopy
Molecular weight
NMR
NMR spectroscopy
Nuclear magnetic resonance
Pollutants
Polydimethylsiloxane
polyethers
Polyols
Polypropylene
Polypropylene glycol
polysiloxane
Propylene oxide
Ring opening polymerization
Segments
Silicone resins
Silicones
Siloxanes
Surfactants
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Summary:The combination of hydrophobic polydimethylsiloxane (PDMS) blocks with hydrophilic polyether segments plays a key role for silicone surfactants. Capitalizing on the double metal cyanide (DMC) catalyst, the direct (i.e., statistical) copolymerization of cyclic siloxanes and epoxides is shown to be feasible. The solvent‐free one‐pot copolymerization of hexamethylcyclotrisiloxane and propylene oxide results in the formation of gradient propylene oxide (PPO)‐PDMS copolymers. Copolymers with up to 46% siloxane content with low dispersities (Р
ISSN:1022-1336
1521-3927
DOI:10.1002/marc.202000542