Self-healing systems based on disulfide-thiol exchange reactions

M.P.F. Pepels, I.A.W. Filot, B. Klumperman, J.G.P. Goossens

Research output: Contribution to journalArticleAcademicpeer-review

228 Citations (Scopus)
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Abstract

New thermoset systems based on disulfide bonds were synthesized with self-healing capabilities. The selfhealing mechanism is not related to disulfide–disulfide exchange reactions, but to thiol–disulfide exchange reactions that are pH-dependent. Stress relaxation experiments showed large relaxation for systems having PTM2 as a curing agent, which indicates that the system can rearrange its molecular structure as a mechanism to release stress. However, relaxation rates decreased for samples tested longer after production. This indicates the disappearance of thiol-groups probably caused by thiol–thiol oxidation.
Original languageEnglish
Pages (from-to)4955-4965
Number of pages11
JournalPolymer Chemistry
Volume4
Issue number18
DOIs
Publication statusPublished - 2013

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