Issue 19, 2017

Synthesis of a self-healing siloxane-based elastomer cross-linked via a furan-modified polyhedral oligomeric silsesquioxane: investigation of a thermally reversible silicon-based cross-link

Abstract

We have successfully prepared an elastomeric material exhibiting excellent temperature-controlled self-healing characteristics. A synthetic procedure is provided to graft siloxane chains with maleimidocarboxyphenyl functional groups. A furan-modified polyhedral oligomeric silsesquioxane with flexible tethers was also synthesized to cross-link the siloxane chains via a Diels–Alder reaction. A model system was prepared to study the thermally reversible nature of the cross-linked entities using differential scanning calorimetry (DSC) and nuclear magnetic resonance (NMR) experiments. Likewise, dynamic solid-state 1H NMR experiments confirmed the reversibility of the linkages in the polymeric materials. Elastomers that were completely severed could be reannealed to the point that signs of a defect were imperceptible even by scanning electron microscopy (SEM).

Graphical abstract: Synthesis of a self-healing siloxane-based elastomer cross-linked via a furan-modified polyhedral oligomeric silsesquioxane: investigation of a thermally reversible silicon-based cross-link

Supplementary files

Article information

Article type
Paper
Submitted
06 Feb 2017
Accepted
10 Apr 2017
First published
12 Apr 2017

Polym. Chem., 2017,8, 2942-2952

Synthesis of a self-healing siloxane-based elastomer cross-linked via a furan-modified polyhedral oligomeric silsesquioxane: investigation of a thermally reversible silicon-based cross-link

A. Nasresfahani and P. M. Zelisko, Polym. Chem., 2017, 8, 2942 DOI: 10.1039/C7PY00215G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements