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Polymers 2018, 10(1), 94; https://doi.org/10.3390/polym10010094

Temperature Scanning Stress Relaxation of an Autonomous Self-Healing Elastomer Containing Non-Covalent Reversible Network Junctions

1
Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, 01069 Dresden, Germany
2
Laboratory of Materials Science, Tampere University of Technology, P.O. Box 589, 33101 Tampere, Finland
3
Faculty of Chemistry and Food Chemistry, Department of macromolecular Chemistry, Technische Universität Dresden, D-01062 Dresden, Germany
4
Faculty of Engineering and Computer Science, University of Applied Sciences Osnabrück, 49076 Osnabrück, Germany
5
Institut für Textilmaschinen und Textile Hochleistungswerkstofftechnik, Technische Universität Dresden, D-01062 Dresden, Germany
*
Author to whom correspondence should be addressed.
Received: 20 November 2017 / Revised: 8 January 2018 / Accepted: 16 January 2018 / Published: 19 January 2018
(This article belongs to the Special Issue Elastomers)
Full-Text   |   PDF [2493 KB, uploaded 19 January 2018]   |  

Abstract

In this work, we report about the mechanical relaxation characteristics of an intrinsically self-healable imidazole modified commercial rubber. This kind of self-healing rubber was prepared by melt mixing of 1-butyl imidazole with bromo-butyl rubber (bromine modified isoprene-isobutylene copolymer, BIIR). By this melt mixing process, the reactive allylic bromine of bromo-butyl rubber was converted into imidazole bromide salt. The resulting development of an ionic character to the polymer backbone leads to an ionic association of the groups which ultimately results to the formation of a network structure of the rubber chains. The modified BIIR thus behaves like a robust crosslinked rubber and shows unusual self-healing properties. The non-covalent reversible network has been studied in detail with respect to stress relaxation experiments, scanning electron microscopic and X-ray scattering. View Full-Text
Keywords: self-healing; bromo-butyl rubber; ionic modification; reversible polymer network; stress-relaxation self-healing; bromo-butyl rubber; ionic modification; reversible polymer network; stress-relaxation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Das, A.; Sallat, A.; Böhme, F.; Sarlin, E.; Vuorinen, J.; Vennemann, N.; Heinrich, G.; Stöckelhuber, K.W. Temperature Scanning Stress Relaxation of an Autonomous Self-Healing Elastomer Containing Non-Covalent Reversible Network Junctions. Polymers 2018, 10, 94.

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