Tailoring viscoelastic properties of dynamic supramolecular poly(butadiene)-based elastomersHyder, 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
It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing. To link to this item DOI: 10.1016/j.mtchem.2022.101008 Abstract/SummaryThe 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.
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