Journal
POLYMER
Volume 204, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2020.122819
Keywords
Magnetic composites; Self-healing polymer; Diels-Alder
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Funding
- Research Foundation Flanders (FWO-Vlaanderen)
- FWO SBO Project AMSeR [G028218N, 12W4719N]
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Self-healing materials have been intensively studied as materials that can mimic healing properties of biological systems. Reversible polymer networks based on Diels-Alder thermoreversible covalent bonds exhibit great healing performance by controlling the temperature of the system. Despite the attractive applications of selfhealing materials, most of them are restricted to the repair of narrow cracks due to their restricted mobility in the solid state. In this work, magnetite (Fe3O4) particles are used to create self-healing magnetic composites. The use of a conventional magnet to apply a magnetic driving force is proposed for the closure of wide damage gaps in the solid state without the need of either mechanical intervention or liquid-like flow inside the material, limiting the structural stability. Thermal, mechanical and chemical characterization of different composites are performed in this study and the healing efficiency is evaluated to assess their potential to close and heal large damage sizes.
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