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

DOI: 10.1016/j.mtchem.2022.101008 DOI Help

Authors: M. Hyder (University of Reading) , A. D. O'Donnell (University of Reading) , A. M. Chippindale (University of Reading) , I. M. German (Kinectrics Inc.) , J. L. Harries (Domino UK Ltd) , O. Shebanova (Diamond Light Source) , I. W. Hamley (University of Reading) , W. Hayes (University of Reading)
Co-authored by industrial partner: Yes

Type: Journal Paper
Journal: Materials Today Chemistry , VOL 26

State: Published (Approved)
Published: December 2022
Diamond Proposal Number(s): 22909

Open Access Open Access

Abstract: 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.

Journal Keywords: Supramolecular materials; Healable; Adhesive; End-group control

Subject Areas: Materials, Chemistry

Instruments: I22-Small angle scattering & Diffraction

Added On: 29/06/2022 10:38


Discipline Tags:

Chemistry Materials Science Organic Chemistry Polymer Science

Technical Tags:

Scattering Small Angle X-ray Scattering (SAXS) Wide Angle X-ray Scattering (WAXS)