One-Component Intrinsic Self-Healing Coatings Based on Reversible Crosslinking by Diels-Alder Cycloadditions
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Publication Details
Output type: Journal article
Author list: Kotteritzsch J, Stumpf S, Hoeppener S, Vitz J, Hager MD, Schubert US
Publisher: Wiley
Publication year: 2013
Journal: Macromolecular Chemistry and Physics (1022-1352)
Volume number: 214
Issue number: 14
Start page: 1636
End page: 1649
Number of pages: 14
ISSN: 1022-1352
eISSN: 1521-3935
Languages: English-Great Britain (EN-GB)
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Open access status: closed
Abstract
Terpolymers containing functional moieties for reversible crosslinking by DA reaction are synthesized for application as self-healing coatings. The polymers are based on a methacrylate backbone containing furan as well as maleimide units in the side chains. No additional crosslinker is required to obtain a self-healing polymeric material. After damage, the material can be heated to a temperature at which the retro-DA reaction takes place. Subsequent cooling to room temperature leads to a healing of the scratch due to the coupling of the two reactive functional groups. This healing process can be repeated multiple times. The polymers are characterized by means of H-1 NMR spectroscopy, size-exclusion chromatography, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry, thermogravimentric analysis, and differential scanning calorimetry. The self-healing properties are studied using atomic force microscopy, scanning electron microscopy, and nanoindentation.
Keywords
copolymerization, crosslinking, Diels-Alder cycloaddition, self-healing polymers, SEM
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