Light-mediated curing of CO 2 -based unsaturated polyethercarbonates via thiol–ene click chemistry

Facile cross-linking of CO 2 -based unsaturated polyethercarbonates with polymercaptanes via thiol–ene click chemistry makes them highly interesting sustainable pre-polymers for material applications as elastomers and sealants. CO 2 -Based unsaturated polyethercarbonates, characterised by a glass tr...

Full description

Saved in:
Bibliographic Details
Published in:Polymer chemistry 2016, Vol.7 (24), p.4121-4126
Main Authors: Subhani, M. A., Köhler, B., Gürtler, C., Leitner, W., Müller, T. E.
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Facile cross-linking of CO 2 -based unsaturated polyethercarbonates with polymercaptanes via thiol–ene click chemistry makes them highly interesting sustainable pre-polymers for material applications as elastomers and sealants. CO 2 -Based unsaturated polyethercarbonates, characterised by a glass transition temperature well below room temperature, were obtained by convenient one-pot synthesis. Terpolymerization of CO 2 with propylene oxide and allylglycidylether provided the polyethercarbonates with a defined number of pendant unsaturated bonds along the backbone of the polymer chain. The time-dependent viscoelastic behaviour during cross-linking with pentaerythritol tetrakis(3-mercaptopropionate) revealed faster curing with increasing content of double bonds in the pre-polymer. In parallel, the higher cross-linking density provided access to more rigid elastic materials.
ISSN:1759-9954
1759-9962
DOI:10.1039/C6PY00458J