Issue 24, 2022

Interpenetrated triple network polymers: synergies of three different dynamic bonds

Abstract

An ongoing challenge in soft materials is to develop networks with high mechanical robustness while showing complete self-healing and stress relaxation. In this study we develop triple network (TN) materials with three different polymers with distinct dynamic linkers (Diels–Alder, boronic acid-ester and hydrogen bonding). TN materials exhibit significant improvement of strength, stability and excellent self-healing properties simultaneously compared to their analogous double networks (DNs). All the TNs (TN-FMA 5%, 7% and 9%) show higher tensile strength over all DNs. In addition, TN-FMA (9%) demonstrates an excellent fracture energy over 20 000 J m−2, 750% elongation and fast stress relaxation. This highlights how dynamic bonding multiplicity and network structure can play a major role in improving the quality of dynamic materials.

Graphical abstract: Interpenetrated triple network polymers: synergies of three different dynamic bonds

Supplementary files

Article information

Article type
Paper
Submitted
02 May 2022
Accepted
26 May 2022
First published
27 May 2022

Polym. Chem., 2022,13, 3705-3712

Interpenetrated triple network polymers: synergies of three different dynamic bonds

S. V. Wanasinghe, N. De Alwis Watuthanthrige and D. Konkolewicz, Polym. Chem., 2022, 13, 3705 DOI: 10.1039/D2PY00575A

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