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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, Advance Article
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, Advance Article , DOI: 10.1039/D0NA00282H

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