Deciphering Siloxane Bond Exchanges: From a Molecular Study to Vitrimerization and Recycling of Silicone Elastomers

Deciphering Siloxane Bond Exchanges: From a Molecular Study to Vitrimerization and Recycling of Silicone Elastomers

The activity of various additives promoting siloxane equilibration reactions is examined and quantified on model compounds. We found in particular that the “superbase” phosphazene derivative P4‐tBu can promote very fast exchanges (a few seconds at 90 °C) even at low concentration (

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Veröffentlicht in:Angewandte Chemie International Edition 2023-03, Vol.62 (12), p.e202300225-n/a
Hauptverfasser: Khedaioui, Douriya Z., Tribout, Camille, Bratasanu, Julie, D'Agosto, Franck, Boisson, Christophe, Montarnal, Damien
Format: Artikel
Sprache:eng
Schlagworte:
Additives
Chemical bonds
Chemical Sciences
Deactivation
Dynamic Networks
Elastomers
High temperature
Networks
Phosphazene
Polymers
Rheological Model
Rheological properties
Silicones
Siloxane Exchange
Siloxanes
Vitrimers
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Beschreibung
Zusammenfassung:The activity of various additives promoting siloxane equilibration reactions is examined and quantified on model compounds. We found in particular that the “superbase” phosphazene derivative P4‐tBu can promote very fast exchanges (a few seconds at 90 °C) even at low concentration (
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.202300225