Issue 18, 2013

Self-healing systems based on disulfide–thiol exchange reactions

Abstract

New thermoset systems based on disulfide bonds were synthesized with self-healing capabilities. The self-healing mechanism is not related to disulfidedisulfide exchange reactions, but to thioldisulfide 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 thiolthiol oxidation.

Graphical abstract: Self-healing systems based on disulfide–thiol exchange reactions

Supplementary files

Article information

Article type
Paper
Submitted
18 Jan 2013
Accepted
12 Mar 2013
First published
13 Mar 2013

Polym. Chem., 2013,4, 4955-4965

Self-healing systems based on disulfidethiol exchange reactions

M. Pepels, I. Filot, B. Klumperman and H. Goossens, Polym. Chem., 2013, 4, 4955 DOI: 10.1039/C3PY00087G

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