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Issue 7, 2020
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Disulfide exchange assisted self-healing epoxy/PDMS/graphene oxide nanocomposites

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Abstract

Vitrimers, a class of polymeric networks that change their topology above a threshold temperature, have been investigated in recent years. In order to further extend their properties, in this research, we demonstrate disulfide exchange assisted polydimethylsiloxane (PDMS)- and graphene oxide (GO)-involved epoxy vitrimers, which exhibit a reduction in glass transition temperature and storage modulus with increase in flexural strain and low-temperature self-healing. Stress relaxation and Arrhenius study were carried out for the analysis of vitrimeric behavior, where the prepared epoxy material displays self-healing at 80 °C for 5 min, whereas a low-temperature self-healing (60 °C) was observed for epoxy/PDMS/GO nanocomposites.

Graphical abstract: Disulfide exchange assisted self-healing epoxy/PDMS/graphene oxide nanocomposites

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Supplementary files

Article information


Submitted
08 Apr 2020
Accepted
02 Jun 2020
First published
03 Jun 2020

This article is Open Access

Nanoscale Adv., 2020,2, 2726-2730
Article type
Communication

Disulfide exchange assisted self-healing epoxy/PDMS/graphene oxide nanocomposites

B. Krishnakumar, M. Singh, V. Parthasarthy, C. Park, N. G. Sahoo, G. J. Yun and S. Rana, Nanoscale Adv., 2020, 2, 2726 DOI: 10.1039/D0NA00282H

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