Light-mediated curing of CO2-based unsaturated polyethercarbonates via thiol–ene click chemistry. Issue 24 (2nd June 2016)

• Record Type: Journal Article
• Authors: Subhani, M. A.; Köhler, B.; Gürtler, C.; Leitner, W.; Müller, T. E.
• Is Part Of: Polymer chemistry. Volume 7:Issue 24(2016)
• Page Start: 4121
• Page End: 4126
• Publication Date: 2016-06-02
• Subjects: Polymers -- Periodicals; Macromolecules -- Periodicals; Polymerization -- Periodicals; 547.705
• DOI: 10.1039/c6py00458j
• Languages: English
• ISSNs: 1759-9954

Abstract

Abstract : Facile cross-linking of CO2 -based unsaturated polyethercarbonates with polymercaptanes via thiol–ene click chemistry makes them highly interesting sustainable pre-polymers for material applications. Abstract : Facile cross-linking of CO2 -based unsaturated polyethercarbonates with polymercaptanes via thiol–ene click chemistry makes them highly interesting sustainable pre-polymers for material applications as elastomers and sealants. CO2 -Based unsaturated polyethercarbonates, characterised by a glass transition temperature well below room temperature, were obtained by convenient one-pot synthesis. Terpolymerization of CO2 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.