Issue 18, 2013
From the journal:

Polymer Chemistry

Self-healing systems based on disulfide–thiol exchange reactions†

Mark Pepels,a   Ivo Filot,b   Bert Klumperman*ac  and  Han Goossens*a  

* Corresponding authors

a Laboratory of Polymer Materials, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P. O. Box 513, 5600 MB Eindhoven, The Netherlands
E-mail: J.G.P.Goossens@tue.nl
Fax: +31 40 2436999
Tel: +31 40 2473899

b Inorganic Materials Chemistry Group, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P. O. Box 513, 5600 MB Eindhoven, The Netherlands

c Stellenbosch University, Department of Chemistry and Polymer Science, Private Bag X1, Matieland 7602, South Africa
E-mail: bklump@sun.ac.za

Abstract

New thermoset systems based on disulfide bonds were synthesized with self-healing capabilities. The self-healing 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.

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

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Article information

DOI
https://doi.org/10.1039/C3PY00087G
Article type
Paper
Submitted
18 Jan 2013
Accepted
12 Mar 2013
First published
13 Mar 2013

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

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Self-healing systems based on disulfide–thiol exchange reactions

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

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