Tailoring viscoelastic properties of dynamic supramolecular poly(butadiene)-based elastomers

Hyder, M., O'Donnell, A. D., Chippindale, A. M. ORCID: https://orcid.org/0000-0002-5918-8701, German, I. M., Harries, J. L., Shebanova, O., Hamley, I. W. ORCID: https://orcid.org/0000-0002-4549-0926 and Hayes, W. ORCID: https://orcid.org/0000-0003-0047-2991 (2022) Tailoring viscoelastic properties of dynamic supramolecular poly(butadiene)-based elastomers. Materials Today Chemistry, 26. 101008. ISSN 2468-5194 doi: 10.1016/j.mtchem.2022.101008

Abstract/Summary

The discovery and development of new adhesive materials is critical for real-world applications of polymeric composite materials. Herein, we report the design and synthesis of a library of structurally related phase-separated supramolecular polyurethanes whose mechanical properties and adhesive characteristics can be enhanced through minor structural modifications of the polymer end-group. The interplay between phase separation of the hard domain polar end-groups and soft polybutadiene domains, coupled with tuneable self-assembly afforded by the polar end-groups, gives rise to a class of materials with tuneable mechanical properties. Exceptionally strong supramolecular adhesives and mechanically robust self-healing elastomers were identified. The mechanical properties were investigated through tensile testing. Finally, rheological analysis of the supramolecular materials was used to identify suitable healing and adhesive temperatures in addition to elucidate the supramolecular polyurethanes' thermal-responsive nature.

Item Type	Article
URI	https://reading-pure-test.eprints-hosting.org/id/eprint/105283
Identification Number/DOI	10.1016/j.mtchem.2022.101008
Refereed	Yes
Divisions	Life Sciences > School of Chemistry, Food and Pharmacy > Department of Chemistry Central Services
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